cf328ff96d
Implements the core/target-agnostic components of Memory Model Relaxation Annotations. RFC: https://discourse.llvm.org/t/rfc-mmras-memory-model-relaxation-annotations/76361/5
151 lines
3.9 KiB
LLVM
151 lines
3.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
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; RUN: opt -passes=simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S %s | FileCheck %s
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; RUN: opt -passes='simplifycfg<sink-common-insts;hoist-common-insts>,verify' -S %s | FileCheck %s
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declare void @clobber1()
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declare void @clobber2()
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define void @sink(ptr %arg, i1 %c) {
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; CHECK-LABEL: define void @sink(
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; CHECK-SAME: ptr [[ARG:%.*]], i1 [[C:%.*]]) {
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; CHECK-NEXT: bb:
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; CHECK-NEXT: br i1 [[C]], label [[THEN:%.*]], label [[ELSE:%.*]]
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; CHECK: then:
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; CHECK-NEXT: call void @clobber1()
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; CHECK-NEXT: store ptr null, ptr [[ARG]], align 8
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; CHECK-NEXT: br label [[EXIT:%.*]]
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; CHECK: else:
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; CHECK-NEXT: call void @clobber2()
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; CHECK-NEXT: store ptr null, ptr [[ARG]], align 8, !mmra [[META0:![0-9]+]]
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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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bb:
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br i1 %c, label %then, label %else
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then:
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call void @clobber1()
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store ptr null, ptr %arg, align 8
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br label %exit
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else:
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call void @clobber2()
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store ptr null, ptr %arg, align 8, !mmra !0
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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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define void @hoist_store(ptr %arg, i1 %c) {
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; CHECK-LABEL: define void @hoist_store(
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; CHECK-SAME: ptr [[ARG:%.*]], i1 [[C:%.*]]) {
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; CHECK-NEXT: bb:
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; CHECK-NEXT: br i1 [[C]], label [[THEN:%.*]], label [[ELSE:%.*]]
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; CHECK: then:
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; CHECK-NEXT: store ptr null, ptr [[ARG]], align 8
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; CHECK-NEXT: call void @clobber1()
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; CHECK-NEXT: br label [[EXIT:%.*]]
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; CHECK: else:
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; CHECK-NEXT: store ptr null, ptr [[ARG]], align 8, !mmra [[META0]]
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; CHECK-NEXT: call void @clobber2()
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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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bb:
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br i1 %c, label %then, label %else
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then:
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store ptr null, ptr %arg, align 8
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call void @clobber1()
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br label %exit
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else:
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store ptr null, ptr %arg, align 8, !mmra !0
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call void @clobber2()
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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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define ptr @sink_load(ptr %arg, i1 %c) {
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; CHECK-LABEL: define ptr @sink_load(
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; CHECK-SAME: ptr [[ARG:%.*]], i1 [[C:%.*]]) {
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; CHECK-NEXT: bb:
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; CHECK-NEXT: br i1 [[C]], label [[THEN:%.*]], label [[ELSE:%.*]]
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; CHECK: then:
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; CHECK-NEXT: call void @clobber1()
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; CHECK-NEXT: [[L1:%.*]] = load ptr, ptr [[ARG]], align 8
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; CHECK-NEXT: br label [[EXIT:%.*]]
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; CHECK: else:
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; CHECK-NEXT: call void @clobber2()
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; CHECK-NEXT: [[L2:%.*]] = load ptr, ptr [[ARG]], align 8, !mmra [[META0]]
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: [[P:%.*]] = phi ptr [ [[L1]], [[THEN]] ], [ [[L2]], [[ELSE]] ]
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; CHECK-NEXT: ret ptr [[P]]
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;
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bb:
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br i1 %c, label %then, label %else
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then:
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call void @clobber1()
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%l1 = load ptr, ptr %arg, align 8
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br label %exit
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else:
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call void @clobber2()
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%l2 = load ptr, ptr %arg, align 8, !mmra !0
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br label %exit
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exit:
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%p = phi ptr [ %l1, %then ], [ %l2, %else ]
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ret ptr %p
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}
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define ptr @hoist_load(ptr %arg, i1 %c) {
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; CHECK-LABEL: define ptr @hoist_load(
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; CHECK-SAME: ptr [[ARG:%.*]], i1 [[C:%.*]]) {
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; CHECK-NEXT: bb:
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; CHECK-NEXT: br i1 [[C]], label [[THEN:%.*]], label [[ELSE:%.*]]
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; CHECK: then:
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; CHECK-NEXT: [[L1:%.*]] = load ptr, ptr [[ARG]], align 8
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; CHECK-NEXT: call void @clobber1()
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; CHECK-NEXT: br label [[EXIT:%.*]]
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; CHECK: else:
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; CHECK-NEXT: [[L2:%.*]] = load ptr, ptr [[ARG]], align 8, !mmra [[META0]]
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; CHECK-NEXT: call void @clobber2()
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: [[P:%.*]] = phi ptr [ [[L1]], [[THEN]] ], [ [[L2]], [[ELSE]] ]
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; CHECK-NEXT: ret ptr [[P]]
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;
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bb:
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br i1 %c, label %then, label %else
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then:
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%l1 = load ptr, ptr %arg, align 8
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call void @clobber1()
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br label %exit
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else:
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%l2 = load ptr, ptr %arg, align 8, !mmra !0
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call void @clobber2()
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br label %exit
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exit:
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%p = phi ptr [ %l1, %then ], [ %l2, %else ]
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ret ptr %p
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}
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!0 = !{!"foo", !"bar"}
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;.
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; CHECK: [[META0]] = !{!"foo", !"bar"}
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;.
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