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TheRock/compiler/amd-llvm/llvm/test/Analysis/MemorySSA/cyclicphi.ll
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

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; RUN: opt -aa-pipeline=basic-aa -passes='print<memoryssa>,verify<memoryssa>' -disable-output < %s 2>&1 | FileCheck %s
%struct.hoge = type { i32, %struct.widget }
%struct.widget = type { i64 }
define hidden void @quux(ptr %f, i1 %arg) align 2 {
%tmp = getelementptr inbounds %struct.hoge, ptr %f, i64 0, i32 1, i32 0
%tmp24 = getelementptr inbounds %struct.hoge, ptr %f, i64 0, i32 1
br label %bb26
bb26: ; preds = %bb77, %0
; CHECK: 3 = MemoryPhi({%0,liveOnEntry},{bb77,2})
; CHECK-NEXT: br i1 %arg, label %bb68, label %bb77
br i1 %arg, label %bb68, label %bb77
bb68: ; preds = %bb26
; CHECK: MemoryUse(liveOnEntry)
; CHECK-NEXT: %tmp69 = load i64, ptr null, align 8
%tmp69 = load i64, ptr null, align 8
; CHECK: 1 = MemoryDef(3)
; CHECK-NEXT: store i64 %tmp69, ptr %tmp, align 8
store i64 %tmp69, ptr %tmp, align 8
br label %bb77
bb77: ; preds = %bb68, %bb26
; CHECK: 2 = MemoryPhi({bb26,3},{bb68,1})
; CHECK: MemoryUse(2)
; CHECK-NEXT: %tmp78 = load ptr, ptr %tmp24, align 8
%tmp78 = load ptr, ptr %tmp24, align 8
%tmp79 = getelementptr inbounds i64, ptr %tmp78, i64 undef
br label %bb26
}
define hidden void @quux_no_null_opt(ptr %f, i1 %arg) align 2 #0 {
; CHECK-LABEL: quux_no_null_opt(
%tmp = getelementptr inbounds %struct.hoge, ptr %f, i64 0, i32 1, i32 0
%tmp24 = getelementptr inbounds %struct.hoge, ptr %f, i64 0, i32 1
br label %bb26
bb26: ; preds = %bb77, %0
; CHECK: 3 = MemoryPhi({%0,liveOnEntry},{bb77,2})
; CHECK-NEXT: br i1 %arg, label %bb68, label %bb77
br i1 %arg, label %bb68, label %bb77
bb68: ; preds = %bb26
; CHECK: MemoryUse(3)
; CHECK-NEXT: %tmp69 = load i64, ptr null, align 8
%tmp69 = load i64, ptr null, align 8
; CHECK: 1 = MemoryDef(3)
; CHECK-NEXT: store i64 %tmp69, ptr %tmp, align 8
store i64 %tmp69, ptr %tmp, align 8
br label %bb77
bb77: ; preds = %bb68, %bb26
; CHECK: 2 = MemoryPhi({bb26,3},{bb68,1})
; CHECK: MemoryUse(2)
; CHECK-NEXT: %tmp78 = load ptr, ptr %tmp24, align 8
%tmp78 = load ptr, ptr %tmp24, align 8
%tmp79 = getelementptr inbounds i64, ptr %tmp78, i64 undef
br label %bb26
}
; CHECK-LABEL: define void @quux_skip
define void @quux_skip(ptr noalias %f, ptr noalias %g, i1 %arg) align 2 {
%tmp = getelementptr inbounds %struct.hoge, ptr %f, i64 0, i32 1, i32 0
%tmp24 = getelementptr inbounds %struct.hoge, ptr %f, i64 0, i32 1
br label %bb26
bb26: ; preds = %bb77, %0
; CHECK: 3 = MemoryPhi({%0,liveOnEntry},{bb77,2})
; CHECK-NEXT: br i1 %arg, label %bb68, label %bb77
br i1 %arg, label %bb68, label %bb77
bb68: ; preds = %bb26
; CHECK: MemoryUse(3)
; CHECK-NEXT: %tmp69 = load i64, ptr %g, align 8
%tmp69 = load i64, ptr %g, align 8
; CHECK: 1 = MemoryDef(3)
; CHECK-NEXT: store i64 %tmp69, ptr %g, align 8
store i64 %tmp69, ptr %g, align 8
br label %bb77
bb77: ; preds = %bb68, %bb26
; CHECK: 2 = MemoryPhi({bb26,3},{bb68,1})
; CHECK: MemoryUse(liveOnEntry)
; CHECK-NEXT: %tmp78 = load ptr, ptr %tmp24, align 8
%tmp78 = load ptr, ptr %tmp24, align 8
br label %bb26
}
; CHECK-LABEL: define void @quux_dominated
define void @quux_dominated(ptr noalias %f, ptr noalias %g, i1 %arg) align 2 {
%tmp = getelementptr inbounds %struct.hoge, ptr %f, i64 0, i32 1, i32 0
%tmp24 = getelementptr inbounds %struct.hoge, ptr %f, i64 0, i32 1
br label %bb26
bb26: ; preds = %bb77, %0
; CHECK: 3 = MemoryPhi({%0,liveOnEntry},{bb77,2})
; CHECK: MemoryUse(3)
; CHECK-NEXT: load ptr, ptr %tmp24, align 8
load ptr, ptr %tmp24, align 8
br i1 %arg, label %bb68, label %bb77
bb68: ; preds = %bb26
; CHECK: MemoryUse(3)
; CHECK-NEXT: %tmp69 = load i64, ptr %g, align 8
%tmp69 = load i64, ptr %g, align 8
; CHECK: 1 = MemoryDef(3)
; CHECK-NEXT: store i64 %tmp69, ptr %g, align 8
store i64 %tmp69, ptr %g, align 8
br label %bb77
bb77: ; preds = %bb68, %bb26
; CHECK: 4 = MemoryPhi({bb26,3},{bb68,1})
; CHECK: 2 = MemoryDef(4)
; CHECK-NEXT: store ptr null, ptr %tmp24, align 8
store ptr null, ptr %tmp24, align 8
br label %bb26
}
; CHECK-LABEL: define void @quux_nodominate
define void @quux_nodominate(ptr noalias %f, ptr noalias %g, i1 %arg) align 2 {
%tmp = getelementptr inbounds %struct.hoge, ptr %f, i64 0, i32 1, i32 0
%tmp24 = getelementptr inbounds %struct.hoge, ptr %f, i64 0, i32 1
br label %bb26
bb26: ; preds = %bb77, %0
; CHECK: 3 = MemoryPhi({%0,liveOnEntry},{bb77,2})
; CHECK: MemoryUse(liveOnEntry)
; CHECK-NEXT: load ptr, ptr %tmp24, align 8
load ptr, ptr %tmp24, align 8
br i1 %arg, label %bb68, label %bb77
bb68: ; preds = %bb26
; CHECK: MemoryUse(3)
; CHECK-NEXT: %tmp69 = load i64, ptr %g, align 8
%tmp69 = load i64, ptr %g, align 8
; CHECK: 1 = MemoryDef(3)
; CHECK-NEXT: store i64 %tmp69, ptr %g, align 8
store i64 %tmp69, ptr %g, align 8
br label %bb77
bb77: ; preds = %bb68, %bb26
; CHECK: 2 = MemoryPhi({bb26,3},{bb68,1})
; CHECK-NEXT: br label %bb26
br label %bb26
}
attributes #0 = { null_pointer_is_valid }
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