184 lines
5.1 KiB
LLVM
184 lines
5.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -passes=sink -S | FileCheck %s
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declare i32 @f_load_global() nounwind willreturn readonly
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declare i32 @f_load_global_throwable() willreturn readonly
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declare i32 @f_load_global_may_not_return() nounwind readonly
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declare i32 @f_load_arg(ptr) nounwind willreturn readonly argmemonly
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declare void @f_store_global(i32) nounwind willreturn
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declare void @f_store_arg(ptr) nounwind willreturn argmemonly
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declare void @f_readonly_arg(ptr readonly, ptr) nounwind willreturn argmemonly
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declare i32 @f_readnone(i32) nounwind willreturn readnone
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@A = external global i32
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@B = external global i32
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; Sink readonly call if no stores are in the way.
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;
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define i32 @test_sink_no_stores(i1 %z) {
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; CHECK-LABEL: @test_sink_no_stores(
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; CHECK-NEXT: br i1 [[Z:%.*]], label [[TRUE:%.*]], label [[FALSE:%.*]]
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; CHECK: true:
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; CHECK-NEXT: [[L:%.*]] = call i32 @f_load_global()
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; CHECK-NEXT: ret i32 [[L]]
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; CHECK: false:
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; CHECK-NEXT: ret i32 0
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;
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%l = call i32 @f_load_global()
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br i1 %z, label %true, label %false
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true:
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ret i32 %l
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false:
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ret i32 0
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}
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define i32 @test_throwable_no_stores(i1 %z) {
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; CHECK-LABEL: @test_throwable_no_stores(
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; CHECK-NEXT: [[L:%.*]] = call i32 @f_load_global_throwable()
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; CHECK-NEXT: br i1 [[Z:%.*]], label [[TRUE:%.*]], label [[FALSE:%.*]]
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; CHECK: true:
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; CHECK-NEXT: ret i32 [[L]]
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; CHECK: false:
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; CHECK-NEXT: ret i32 0
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;
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%l = call i32 @f_load_global_throwable()
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br i1 %z, label %true, label %false
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true:
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ret i32 %l
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false:
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ret i32 0
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}
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define i32 @test_may_not_return_no_stores(i1 %z) {
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; CHECK-LABEL: @test_may_not_return_no_stores(
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; CHECK-NEXT: [[L:%.*]] = call i32 @f_load_global_may_not_return()
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; CHECK-NEXT: br i1 [[Z:%.*]], label [[TRUE:%.*]], label [[FALSE:%.*]]
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; CHECK: true:
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; CHECK-NEXT: ret i32 [[L]]
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; CHECK: false:
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; CHECK-NEXT: ret i32 0
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;
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%l = call i32 @f_load_global_may_not_return()
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br i1 %z, label %true, label %false
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true:
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ret i32 %l
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false:
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ret i32 0
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}
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define i32 @test_sink_argmem_store(i1 %z) {
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; CHECK-LABEL: @test_sink_argmem_store(
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; CHECK-NEXT: store i32 0, ptr @B, align 4
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; CHECK-NEXT: br i1 [[Z:%.*]], label [[TRUE:%.*]], label [[FALSE:%.*]]
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; CHECK: true:
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; CHECK-NEXT: [[L:%.*]] = call i32 @f_load_arg(ptr @A)
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; CHECK-NEXT: ret i32 [[L]]
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; CHECK: false:
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; CHECK-NEXT: ret i32 0
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;
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%l = call i32 @f_load_arg(ptr @A)
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store i32 0, ptr @B
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br i1 %z, label %true, label %false
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true:
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ret i32 %l
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false:
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ret i32 0
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}
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define i32 @test_sink_argmem_call(i1 %z) {
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; CHECK-LABEL: @test_sink_argmem_call(
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; CHECK-NEXT: call void @f_store_arg(ptr @B)
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; CHECK-NEXT: br i1 [[Z:%.*]], label [[TRUE:%.*]], label [[FALSE:%.*]]
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; CHECK: true:
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; CHECK-NEXT: [[L:%.*]] = call i32 @f_load_arg(ptr @A)
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; CHECK-NEXT: ret i32 [[L]]
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; CHECK: false:
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; CHECK-NEXT: ret i32 0
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;
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%l = call i32 @f_load_arg(ptr @A)
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call void @f_store_arg(ptr @B)
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br i1 %z, label %true, label %false
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true:
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ret i32 %l
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false:
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ret i32 0
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}
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define i32 @test_sink_argmem_multiple(i1 %z) {
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; CHECK-LABEL: @test_sink_argmem_multiple(
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; CHECK-NEXT: call void @f_readonly_arg(ptr @A, ptr @B)
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; CHECK-NEXT: br i1 [[Z:%.*]], label [[TRUE:%.*]], label [[FALSE:%.*]]
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; CHECK: true:
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; CHECK-NEXT: [[L:%.*]] = call i32 @f_load_arg(ptr @A)
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; CHECK-NEXT: ret i32 [[L]]
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; CHECK: false:
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; CHECK-NEXT: ret i32 0
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;
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%l = call i32 @f_load_arg(ptr @A)
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call void @f_readonly_arg(ptr @A, ptr @B)
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br i1 %z, label %true, label %false
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true:
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ret i32 %l
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false:
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ret i32 0
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}
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; But don't sink if there is a store.
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define i32 @test_nosink_store(i1 %z) {
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; CHECK-LABEL: @test_nosink_store(
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; CHECK-NEXT: [[L:%.*]] = call i32 @f_load_global()
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; CHECK-NEXT: store i32 0, ptr @A, align 4
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; CHECK-NEXT: br i1 [[Z:%.*]], label [[TRUE:%.*]], label [[FALSE:%.*]]
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; CHECK: true:
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; CHECK-NEXT: ret i32 [[L]]
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; CHECK: false:
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; CHECK-NEXT: ret i32 0
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;
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%l = call i32 @f_load_global()
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store i32 0, ptr @A
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br i1 %z, label %true, label %false
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true:
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ret i32 %l
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false:
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ret i32 0
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}
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define i32 @test_nosink_call(i1 %z) {
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; CHECK-LABEL: @test_nosink_call(
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; CHECK-NEXT: [[L:%.*]] = call i32 @f_load_global()
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; CHECK-NEXT: call void @f_store_global(i32 0)
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; CHECK-NEXT: br i1 [[Z:%.*]], label [[TRUE:%.*]], label [[FALSE:%.*]]
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; CHECK: true:
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; CHECK-NEXT: ret i32 [[L]]
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; CHECK: false:
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; CHECK-NEXT: ret i32 0
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;
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%l = call i32 @f_load_global()
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call void @f_store_global(i32 0)
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br i1 %z, label %true, label %false
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true:
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ret i32 %l
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false:
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ret i32 0
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}
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; readnone calls are sunk across stores.
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define i32 @test_sink_readnone(i1 %z) {
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; CHECK-LABEL: @test_sink_readnone(
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; CHECK-NEXT: store i32 0, ptr @A, align 4
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; CHECK-NEXT: br i1 [[Z:%.*]], label [[TRUE:%.*]], label [[FALSE:%.*]]
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; CHECK: true:
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; CHECK-NEXT: [[L:%.*]] = call i32 @f_readnone(i32 0)
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; CHECK-NEXT: ret i32 [[L]]
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; CHECK: false:
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; CHECK-NEXT: ret i32 0
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;
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%l = call i32 @f_readnone(i32 0)
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store i32 0, ptr @A
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br i1 %z, label %true, label %false
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true:
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ret i32 %l
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false:
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ret i32 0
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}
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