316 lines
11 KiB
LLVM
316 lines
11 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes=instsimplify -S < %s | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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@g1 = global i32 0, align 4
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@g2 = internal global i32 0, align 4
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@g3 = unnamed_addr global i32 0, align 4
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@g4 = hidden global i32 0, align 4
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@g5 = protected global i32 0, align 4
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@g6 = thread_local unnamed_addr global i32 0, align 4
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; Make sure we can simplify away a pointer comparison between
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; dynamically-allocated memory and a local stack allocation.
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; void p()
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; {
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; int *mData;
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; int mStackData[10];
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; mData = new int[12];
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; if (mData != mStackData) {
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; delete[] mData;
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; }
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; }
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define void @_Z2p1v() {
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; CHECK-LABEL: @_Z2p1v(
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; CHECK-NEXT: bb:
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; CHECK-NEXT: [[I1:%.*]] = tail call noalias ptr @_Znam(i64 48) #[[ATTR2:[0-9]+]]
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; CHECK-NEXT: br i1 false, label [[BB6:%.*]], label [[BB5:%.*]]
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; CHECK: bb5:
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; CHECK-NEXT: call void @_ZdaPv(ptr [[I1]]) #[[ATTR3:[0-9]+]]
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; CHECK-NEXT: br label [[BB6]]
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; CHECK: bb6:
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; CHECK-NEXT: ret void
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;
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bb:
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%mStackData = alloca [10 x i32], align 16
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%i1 = tail call noalias ptr @_Znam(i64 48) #3
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%i4 = icmp eq ptr %i1, %mStackData
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br i1 %i4, label %bb6, label %bb5
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bb5: ; preds = %bb
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call void @_ZdaPv(ptr %i1) #4
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br label %bb6
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bb6: ; preds = %bb5, %bb
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ret void
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}
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define void @_Z2p2bb(i1 zeroext %b1, i1 zeroext %b2) {
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; CHECK-LABEL: @_Z2p2bb(
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; CHECK-NEXT: bb:
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; CHECK-NEXT: [[I3:%.*]] = tail call noalias ptr @_Znam(i64 48) #[[ATTR2]]
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; CHECK-NEXT: [[I4:%.*]] = tail call noalias ptr @_Znam(i64 48) #[[ATTR2]]
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; CHECK-NEXT: br i1 false, label [[BB8:%.*]], label [[BB7:%.*]]
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; CHECK: bb7:
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; CHECK-NEXT: call void @_ZdaPv(ptr [[I3]]) #[[ATTR3]]
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; CHECK-NEXT: call void @_ZdaPv(ptr [[I4]]) #[[ATTR3]]
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; CHECK-NEXT: br label [[BB8]]
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; CHECK: bb8:
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; CHECK-NEXT: ret void
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;
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bb:
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%mStackData = alloca [10 x i32], align 16
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%i2 = select i1 %b1, ptr %mStackData, ptr @g2
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%i3 = tail call noalias ptr @_Znam(i64 48) #3
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%i4 = tail call noalias ptr @_Znam(i64 48) #3
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%.v = select i1 %b2, ptr %i3, ptr %i4
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%i6 = icmp eq ptr %.v, %i2
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br i1 %i6, label %bb8, label %bb7
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bb7: ; preds = %bb
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call void @_ZdaPv(ptr %i3) #4
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call void @_ZdaPv(ptr %i4) #4
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br label %bb8
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bb8: ; preds = %bb7, %bb
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ret void
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}
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define void @_Z2p4bb(i1 zeroext %b1, i1 zeroext %b2) {
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; CHECK-LABEL: @_Z2p4bb(
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; CHECK-NEXT: bb:
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; CHECK-NEXT: [[I3:%.*]] = tail call noalias ptr @_Znam(i64 48) #[[ATTR2]]
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; CHECK-NEXT: [[I4:%.*]] = tail call noalias ptr @_Znam(i64 48) #[[ATTR2]]
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; CHECK-NEXT: br i1 false, label [[BB8:%.*]], label [[BB7:%.*]]
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; CHECK: bb7:
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; CHECK-NEXT: call void @_ZdaPv(ptr [[I3]]) #[[ATTR3]]
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; CHECK-NEXT: call void @_ZdaPv(ptr [[I4]]) #[[ATTR3]]
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; CHECK-NEXT: br label [[BB8]]
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; CHECK: bb8:
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; CHECK-NEXT: ret void
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;
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bb:
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%mStackData = alloca [10 x i32], align 16
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%i2 = select i1 %b1, ptr %mStackData, ptr @g3
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%i3 = tail call noalias ptr @_Znam(i64 48) #3
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%i4 = tail call noalias ptr @_Znam(i64 48) #3
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%.v = select i1 %b2, ptr %i3, ptr %i4
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%i6 = icmp eq ptr %.v, %i2
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br i1 %i6, label %bb8, label %bb7
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bb7: ; preds = %bb
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call void @_ZdaPv(ptr %i3) #4
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call void @_ZdaPv(ptr %i4) #4
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br label %bb8
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bb8: ; preds = %bb7, %bb
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ret void
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}
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define void @_Z2p5bb(i1 zeroext %b1, i1 zeroext %b2) {
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; CHECK-LABEL: @_Z2p5bb(
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; CHECK-NEXT: bb:
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; CHECK-NEXT: [[I3:%.*]] = tail call noalias ptr @_Znam(i64 48) #[[ATTR2]]
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; CHECK-NEXT: [[I4:%.*]] = tail call noalias ptr @_Znam(i64 48) #[[ATTR2]]
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; CHECK-NEXT: br i1 false, label [[BB8:%.*]], label [[BB7:%.*]]
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; CHECK: bb7:
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; CHECK-NEXT: call void @_ZdaPv(ptr [[I3]]) #[[ATTR3]]
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; CHECK-NEXT: call void @_ZdaPv(ptr [[I4]]) #[[ATTR3]]
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; CHECK-NEXT: br label [[BB8]]
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; CHECK: bb8:
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; CHECK-NEXT: ret void
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;
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bb:
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%mStackData = alloca [10 x i32], align 16
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%i2 = select i1 %b1, ptr %mStackData, ptr @g4
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%i3 = tail call noalias ptr @_Znam(i64 48) #3
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%i4 = tail call noalias ptr @_Znam(i64 48) #3
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%.v = select i1 %b2, ptr %i3, ptr %i4
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%i6 = icmp eq ptr %.v, %i2
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br i1 %i6, label %bb8, label %bb7
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bb7: ; preds = %bb
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call void @_ZdaPv(ptr %i3) #4
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call void @_ZdaPv(ptr %i4) #4
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br label %bb8
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bb8: ; preds = %bb7, %bb
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ret void
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}
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define void @_Z2p6bb(i1 zeroext %b1, i1 zeroext %b2) {
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; CHECK-LABEL: @_Z2p6bb(
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; CHECK-NEXT: bb:
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; CHECK-NEXT: [[I3:%.*]] = tail call noalias ptr @_Znam(i64 48) #[[ATTR2]]
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; CHECK-NEXT: [[I4:%.*]] = tail call noalias ptr @_Znam(i64 48) #[[ATTR2]]
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; CHECK-NEXT: br i1 false, label [[BB8:%.*]], label [[BB7:%.*]]
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; CHECK: bb7:
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; CHECK-NEXT: call void @_ZdaPv(ptr [[I3]]) #[[ATTR3]]
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; CHECK-NEXT: call void @_ZdaPv(ptr [[I4]]) #[[ATTR3]]
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; CHECK-NEXT: br label [[BB8]]
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; CHECK: bb8:
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; CHECK-NEXT: ret void
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;
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bb:
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%mStackData = alloca [10 x i32], align 16
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%i2 = select i1 %b1, ptr %mStackData, ptr @g5
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%i3 = tail call noalias ptr @_Znam(i64 48) #3
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%i4 = tail call noalias ptr @_Znam(i64 48) #3
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%.v = select i1 %b2, ptr %i3, ptr %i4
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%i6 = icmp eq ptr %.v, %i2
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br i1 %i6, label %bb8, label %bb7
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bb7: ; preds = %bb
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call void @_ZdaPv(ptr %i3) #4
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call void @_ZdaPv(ptr %i4) #4
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br label %bb8
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bb8: ; preds = %bb7, %bb
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ret void
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}
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define void @_Z4nopebbPi(i1 zeroext %b1, i1 zeroext %b2, ptr readnone %q) {
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; CHECK-LABEL: @_Z4nopebbPi(
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; CHECK-NEXT: bb:
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; CHECK-NEXT: [[MSTACKDATA:%.*]] = alloca [10 x i32], align 16
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; CHECK-NEXT: [[I2:%.*]] = select i1 [[B1:%.*]], ptr [[MSTACKDATA]], ptr [[Q:%.*]]
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; CHECK-NEXT: [[I3:%.*]] = tail call noalias ptr @_Znam(i64 48) #[[ATTR2]]
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; CHECK-NEXT: [[I4:%.*]] = tail call noalias ptr @_Znam(i64 48) #[[ATTR2]]
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; CHECK-NEXT: [[DOTV:%.*]] = select i1 [[B2:%.*]], ptr [[I3]], ptr [[I4]]
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; CHECK-NEXT: [[I6:%.*]] = icmp eq ptr [[DOTV]], [[I2]]
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; CHECK-NEXT: br i1 [[I6]], label [[BB8:%.*]], label [[BB7:%.*]]
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; CHECK: bb7:
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; CHECK-NEXT: call void @_ZdaPv(ptr [[I3]]) #[[ATTR3]]
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; CHECK-NEXT: call void @_ZdaPv(ptr [[I4]]) #[[ATTR3]]
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; CHECK-NEXT: br label [[BB8]]
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; CHECK: bb8:
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; CHECK-NEXT: ret void
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;
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bb:
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%mStackData = alloca [10 x i32], align 16
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%i2 = select i1 %b1, ptr %mStackData, ptr %q
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%i3 = tail call noalias ptr @_Znam(i64 48) #3
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%i4 = tail call noalias ptr @_Znam(i64 48) #3
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%.v = select i1 %b2, ptr %i3, ptr %i4
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%i6 = icmp eq ptr %.v, %i2
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br i1 %i6, label %bb8, label %bb7
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bb7: ; preds = %bb
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call void @_ZdaPv(ptr %i3) #4
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call void @_ZdaPv(ptr %i4) #4
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br label %bb8
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bb8: ; preds = %bb7, %bb
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ret void
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}
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define void @_Z2p3bb(i1 zeroext %b1, i1 zeroext %b2) {
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; CHECK-LABEL: @_Z2p3bb(
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; CHECK-NEXT: bb:
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; CHECK-NEXT: [[MSTACKDATA:%.*]] = alloca [10 x i32], align 16
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; CHECK-NEXT: [[I2:%.*]] = select i1 [[B1:%.*]], ptr [[MSTACKDATA]], ptr @g1
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; CHECK-NEXT: [[I3:%.*]] = tail call noalias ptr @_Znam(i64 48) #[[ATTR2]]
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; CHECK-NEXT: [[I4:%.*]] = tail call noalias ptr @_Znam(i64 48) #[[ATTR2]]
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; CHECK-NEXT: [[DOTV:%.*]] = select i1 [[B2:%.*]], ptr [[I3]], ptr [[I4]]
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; CHECK-NEXT: [[I6:%.*]] = icmp eq ptr [[DOTV]], [[I2]]
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; CHECK-NEXT: br i1 [[I6]], label [[BB8:%.*]], label [[BB7:%.*]]
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; CHECK: bb7:
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; CHECK-NEXT: call void @_ZdaPv(ptr [[I3]]) #[[ATTR3]]
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; CHECK-NEXT: call void @_ZdaPv(ptr [[I4]]) #[[ATTR3]]
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; CHECK-NEXT: br label [[BB8]]
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; CHECK: bb8:
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; CHECK-NEXT: ret void
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;
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bb:
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%mStackData = alloca [10 x i32], align 16
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%i2 = select i1 %b1, ptr %mStackData, ptr @g1
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%i3 = tail call noalias ptr @_Znam(i64 48) #3
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%i4 = tail call noalias ptr @_Znam(i64 48) #3
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%.v = select i1 %b2, ptr %i3, ptr %i4
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%i6 = icmp eq ptr %.v, %i2
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br i1 %i6, label %bb8, label %bb7
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bb7: ; preds = %bb
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call void @_ZdaPv(ptr %i3) #4
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call void @_ZdaPv(ptr %i4) #4
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br label %bb8
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bb8: ; preds = %bb7, %bb
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ret void
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}
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define void @_Z2p7bb(i1 zeroext %b1, i1 zeroext %b2) {
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; CHECK-LABEL: @_Z2p7bb(
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; CHECK-NEXT: bb:
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; CHECK-NEXT: [[MSTACKDATA:%.*]] = alloca [10 x i32], align 16
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; CHECK-NEXT: [[I2:%.*]] = select i1 [[B1:%.*]], ptr [[MSTACKDATA]], ptr @g6
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; CHECK-NEXT: [[I3:%.*]] = tail call noalias ptr @_Znam(i64 48) #[[ATTR2]]
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; CHECK-NEXT: [[I4:%.*]] = tail call noalias ptr @_Znam(i64 48) #[[ATTR2]]
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; CHECK-NEXT: [[DOTV:%.*]] = select i1 [[B2:%.*]], ptr [[I3]], ptr [[I4]]
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; CHECK-NEXT: [[I6:%.*]] = icmp eq ptr [[DOTV]], [[I2]]
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; CHECK-NEXT: br i1 [[I6]], label [[BB8:%.*]], label [[BB7:%.*]]
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; CHECK: bb7:
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; CHECK-NEXT: call void @_ZdaPv(ptr [[I3]]) #[[ATTR3]]
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; CHECK-NEXT: call void @_ZdaPv(ptr [[I4]]) #[[ATTR3]]
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; CHECK-NEXT: br label [[BB8]]
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; CHECK: bb8:
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; CHECK-NEXT: ret void
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;
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bb:
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%mStackData = alloca [10 x i32], align 16
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%i2 = select i1 %b1, ptr %mStackData, ptr @g6
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%i3 = tail call noalias ptr @_Znam(i64 48) #3
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%i4 = tail call noalias ptr @_Znam(i64 48) #3
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%.v = select i1 %b2, ptr %i3, ptr %i4
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%i6 = icmp eq ptr %.v, %i2
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br i1 %i6, label %bb8, label %bb7
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bb7: ; preds = %bb
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call void @_ZdaPv(ptr %i3) #4
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call void @_ZdaPv(ptr %i4) #4
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br label %bb8
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bb8: ; preds = %bb7, %bb
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ret void
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}
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define void @_Z2p2v(i32 %c) {
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; CHECK-LABEL: @_Z2p2v(
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; CHECK-NEXT: bb:
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; CHECK-NEXT: [[MSTACKDATA:%.*]] = alloca [10 x i32], i32 [[C:%.*]], align 16
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; CHECK-NEXT: [[I1:%.*]] = tail call noalias ptr @_Znam(i64 48) #[[ATTR2]]
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; CHECK-NEXT: [[I4:%.*]] = icmp eq ptr [[I1]], [[MSTACKDATA]]
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; CHECK-NEXT: br i1 [[I4]], label [[BB6:%.*]], label [[BB5:%.*]]
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; CHECK: bb5:
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; CHECK-NEXT: call void @_ZdaPv(ptr [[I1]]) #[[ATTR3]]
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; CHECK-NEXT: br label [[BB6]]
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; CHECK: bb6:
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; CHECK-NEXT: ret void
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;
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bb:
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%mStackData = alloca [10 x i32], i32 %c, align 16
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%i1 = tail call noalias ptr @_Znam(i64 48) #3
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%i4 = icmp eq ptr %i1, %mStackData
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br i1 %i4, label %bb6, label %bb5
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bb5: ; preds = %bb
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call void @_ZdaPv(ptr %i1) #4
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br label %bb6
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bb6: ; preds = %bb5, %bb
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ret void
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}
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; Function Attrs: nobuiltin
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declare noalias ptr @_Znam(i64) #1
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; Function Attrs: nobuiltin nounwind
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declare void @_ZdaPv(ptr) #2
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attributes #1 = { nobuiltin }
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attributes #2 = { nobuiltin nounwind }
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attributes #3 = { builtin }
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attributes #4 = { builtin nounwind }
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