81 lines
2.2 KiB
LLVM
81 lines
2.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -jump-threading -jump-threading-threshold=3 -S -verify | FileCheck %s
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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@a = global i32 0, align 4
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; Show that freeze is not counted when comparing the cost with the threshold
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define void @foo(i32 %cond1, i32 %cond2) {
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; CHECK-LABEL: @foo(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i32 [[COND1:%.*]], 0
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; CHECK-NEXT: br i1 [[TOBOOL]], label [[BB_COND2_THREAD:%.*]], label [[BB_COND2:%.*]]
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; CHECK: bb.cond2:
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; CHECK-NEXT: call void @f1()
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; CHECK-NEXT: [[COND2_FR:%.*]] = freeze i32 [[COND2:%.*]]
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; CHECK-NEXT: [[X:%.*]] = add i32 [[COND2_FR]], 1
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; CHECK-NEXT: [[TOBOOL1:%.*]] = icmp eq i32 [[X]], 0
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; CHECK-NEXT: br i1 [[TOBOOL1]], label [[BB_F4:%.*]], label [[BB_F2:%.*]]
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; CHECK: bb.cond2.thread:
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; CHECK-NEXT: [[COND2_FR2:%.*]] = freeze i32 [[COND2]]
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; CHECK-NEXT: [[X3:%.*]] = add i32 [[COND2_FR2]], 1
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; CHECK-NEXT: [[TOBOOL14:%.*]] = icmp eq i32 [[X3]], 0
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; CHECK-NEXT: br i1 [[TOBOOL14]], label [[BB_F3:%.*]], label [[BB_F2]]
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; CHECK: bb.f2:
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; CHECK-NEXT: call void @f2()
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; CHECK-NEXT: br label [[EXIT:%.*]]
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; CHECK: bb.f3:
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; CHECK-NEXT: call void @f3()
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: bb.f4:
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; CHECK-NEXT: [[PTR5:%.*]] = phi i32* [ null, [[BB_COND2]] ]
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; CHECK-NEXT: call void @f4()
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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entry:
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%tobool = icmp eq i32 %cond1, 0
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br i1 %tobool, label %bb.cond2, label %bb.f1
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bb.f1:
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call void @f1()
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br label %bb.cond2
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bb.cond2:
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%ptr = phi i32* [ null, %bb.f1 ], [ @a, %entry ]
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%cond2.fr = freeze i32 %cond2
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%x = add i32 %cond2.fr, 1
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%tobool1 = icmp eq i32 %x, 0
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br i1 %tobool1, label %bb.file, label %bb.f2
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bb.f2:
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call void @f2()
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br label %exit
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bb.file:
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%cmp = icmp eq i32* %ptr, null
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br i1 %cmp, label %bb.f4, label %bb.f3
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bb.f3:
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call void @f3()
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br label %exit
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bb.f4:
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call void @f4()
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br label %exit
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exit:
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ret void
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}
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declare void @f1()
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declare void @f2()
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declare void @f3()
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declare void @f4()
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