74 lines
3.5 KiB
LLVM
74 lines
3.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; RUN: opt < %s -instcombine -instcombine-max-iterations=1 -S | FileCheck %s
|
|
; These tests check the optimizations specific to
|
|
; pointers being relocated at a statepoint.
|
|
|
|
|
|
declare void @func()
|
|
|
|
define i1 @test_null(i1 %cond) gc "statepoint-example" {
|
|
; CHECK-LABEL: @test_null(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br i1 [[COND:%.*]], label [[LEFT:%.*]], label [[RIGHT:%.*]]
|
|
; CHECK: right:
|
|
; CHECK-NEXT: br label [[MERGE:%.*]]
|
|
; CHECK: left:
|
|
; CHECK-NEXT: [[SAFEPOINT_TOKEN:%.*]] = tail call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* nonnull @func, i32 0, i32 0, i32 0, i32 0) [ "gc-live"() ]
|
|
; CHECK-NEXT: br label [[MERGE]]
|
|
; CHECK: merge:
|
|
; CHECK-NEXT: [[SAFEPOINT_TOKEN2:%.*]] = tail call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* nonnull @func, i32 0, i32 0, i32 0, i32 0) [ "gc-live"() ]
|
|
; CHECK-NEXT: ret i1 true
|
|
;
|
|
entry:
|
|
br i1 %cond, label %left, label %right
|
|
|
|
right:
|
|
br label %merge
|
|
|
|
left:
|
|
%safepoint_token = tail call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @func, i32 0, i32 0, i32 0, i32 0) ["gc-live" (i32* null)]
|
|
%pnew = call i32* @llvm.experimental.gc.relocate.p1i32(token %safepoint_token, i32 0, i32 0)
|
|
br label %merge
|
|
|
|
merge:
|
|
%pnew_phi = phi i32* [null, %right], [%pnew, %left]
|
|
%safepoint_token2 = tail call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @func, i32 0, i32 0, i32 0, i32 0) ["gc-live" (i32* %pnew_phi)]
|
|
%pnew2 = call i32* @llvm.experimental.gc.relocate.p1i32(token %safepoint_token2, i32 0, i32 0)
|
|
%cmp = icmp eq i32* %pnew2, null
|
|
ret i1 %cmp
|
|
}
|
|
|
|
define i32* @test_undef(i1 %cond) gc "statepoint-example" {
|
|
; CHECK-LABEL: @test_undef(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br i1 [[COND:%.*]], label [[LEFT:%.*]], label [[RIGHT:%.*]]
|
|
; CHECK: right:
|
|
; CHECK-NEXT: br label [[MERGE:%.*]]
|
|
; CHECK: left:
|
|
; CHECK-NEXT: [[SAFEPOINT_TOKEN:%.*]] = tail call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* nonnull @func, i32 0, i32 0, i32 0, i32 0) [ "gc-live"() ]
|
|
; CHECK-NEXT: br label [[MERGE]]
|
|
; CHECK: merge:
|
|
; CHECK-NEXT: [[SAFEPOINT_TOKEN2:%.*]] = tail call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* nonnull @func, i32 0, i32 0, i32 0, i32 0) [ "gc-live"() ]
|
|
; CHECK-NEXT: ret i32* undef
|
|
;
|
|
entry:
|
|
br i1 %cond, label %left, label %right
|
|
|
|
right:
|
|
br label %merge
|
|
|
|
left:
|
|
%safepoint_token = tail call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @func, i32 0, i32 0, i32 0, i32 0) ["gc-live" (i32* undef)]
|
|
%pnew = call i32* @llvm.experimental.gc.relocate.p1i32(token %safepoint_token, i32 0, i32 0)
|
|
br label %merge
|
|
|
|
merge:
|
|
%pnew_phi = phi i32* [undef, %right], [%pnew, %left]
|
|
%safepoint_token2 = tail call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @func, i32 0, i32 0, i32 0, i32 0) ["gc-live" (i32* %pnew_phi)]
|
|
%pnew2 = call i32* @llvm.experimental.gc.relocate.p1i32(token %safepoint_token2, i32 0, i32 0)
|
|
ret i32* %pnew2
|
|
}
|
|
|
|
declare token @llvm.experimental.gc.statepoint.p0f_isVoidf(i64, i32, void ()*, i32, i32, ...)
|
|
declare i32* @llvm.experimental.gc.relocate.p1i32(token, i32, i32)
|