forked from OSchip/llvm-project
710 lines
21 KiB
LLVM
710 lines
21 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes='dse' -S %s | FileCheck %s
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target datalayout = "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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; Test case from PR50220.
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define i32 @other_value_escapes_before_call() {
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; CHECK-LABEL: @other_value_escapes_before_call(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[V1:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[V2:%.*]] = alloca i32, align 4
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; CHECK-NEXT: store i32 0, i32* [[V1]], align 4
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; CHECK-NEXT: call void @escape(i32* nonnull [[V1]])
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; CHECK-NEXT: [[CALL:%.*]] = call i32 @getval()
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; CHECK-NEXT: store i32 [[CALL]], i32* [[V2]], align 4
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; CHECK-NEXT: call void @escape(i32* nonnull [[V2]])
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; CHECK-NEXT: [[LOAD_V2:%.*]] = load i32, i32* [[V2]], align 4
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; CHECK-NEXT: [[LOAD_V1:%.*]] = load i32, i32* [[V1]], align 4
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; CHECK-NEXT: [[ADD:%.*]] = add nsw i32 [[LOAD_V2]], [[LOAD_V1]]
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; CHECK-NEXT: ret i32 [[ADD]]
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;
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entry:
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%v1 = alloca i32, align 4
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%v2 = alloca i32, align 4
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store i32 0, i32* %v1, align 4
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call void @escape(i32* nonnull %v1)
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store i32 55555, i32* %v2, align 4
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%call = call i32 @getval()
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store i32 %call, i32* %v2, align 4
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call void @escape(i32* nonnull %v2)
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%load.v2 = load i32, i32* %v2, align 4
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%load.v1 = load i32, i32* %v1, align 4
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%add = add nsw i32 %load.v2, %load.v1
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ret i32 %add
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}
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declare void @escape(i32*)
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declare i32 @getval()
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declare void @escape_and_clobber(i32*)
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declare void @escape_writeonly(i32*) writeonly
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declare void @clobber()
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define i32 @test_not_captured_before_call_same_bb() {
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; CHECK-LABEL: @test_not_captured_before_call_same_bb(
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
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; CHECK-NEXT: store i32 99, i32* [[A]], align 4
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; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
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; CHECK-NEXT: ret i32 [[R]]
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;
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%a = alloca i32, align 4
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store i32 55, i32* %a
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%r = call i32 @getval()
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store i32 99, i32* %a, align 4
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call void @escape_and_clobber(i32* %a)
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ret i32 %r
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}
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define i32 @test_not_captured_before_call_same_bb_escape_unreachable_block() {
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; CHECK-LABEL: @test_not_captured_before_call_same_bb_escape_unreachable_block(
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
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; CHECK-NEXT: store i32 99, i32* [[A]], align 4
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; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
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; CHECK-NEXT: ret i32 [[R]]
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; CHECK: unreach:
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; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
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; CHECK-NEXT: ret i32 0
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;
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%a = alloca i32, align 4
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store i32 55, i32* %a
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%r = call i32 @getval()
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store i32 99, i32* %a, align 4
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call void @escape_and_clobber(i32* %a)
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ret i32 %r
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unreach:
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call void @escape_and_clobber(i32* %a)
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ret i32 0
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}
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define i32 @test_captured_and_clobbered_after_load_same_bb_2() {
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; CHECK-LABEL: @test_captured_and_clobbered_after_load_same_bb_2(
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
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; CHECK-NEXT: store i32 55, i32* [[A]], align 4
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; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
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; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
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; CHECK-NEXT: store i32 99, i32* [[A]], align 4
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; CHECK-NEXT: call void @clobber()
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; CHECK-NEXT: ret i32 [[R]]
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;
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%a = alloca i32, align 4
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store i32 55, i32* %a
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%r = call i32 @getval()
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call void @escape_and_clobber(i32* %a)
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store i32 99, i32* %a, align 4
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call void @clobber()
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ret i32 %r
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}
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define i32 @test_captured_after_call_same_bb_2_clobbered_later() {
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; CHECK-LABEL: @test_captured_after_call_same_bb_2_clobbered_later(
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
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; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
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; CHECK-NEXT: store i32 99, i32* [[A]], align 4
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; CHECK-NEXT: call void @clobber()
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; CHECK-NEXT: ret i32 [[R]]
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;
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%a = alloca i32, align 4
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store i32 55, i32* %a
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%r = call i32 @getval()
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call void @escape_writeonly(i32* %a)
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store i32 99, i32* %a, align 4
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call void @clobber()
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ret i32 %r
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}
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define i32 @test_captured_sibling_path_to_call_other_blocks_1(i1 %c.1) {
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; CHECK-LABEL: @test_captured_sibling_path_to_call_other_blocks_1(
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
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; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[ELSE:%.*]]
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; CHECK: then:
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; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
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; CHECK-NEXT: br label [[EXIT:%.*]]
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; CHECK: else:
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; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: [[P:%.*]] = phi i32 [ 0, [[THEN]] ], [ [[R]], [[ELSE]] ]
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; CHECK-NEXT: store i32 99, i32* [[A]], align 4
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; CHECK-NEXT: call void @clobber()
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; CHECK-NEXT: ret i32 [[P]]
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;
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%a = alloca i32, align 4
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store i32 55, i32* %a
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br i1 %c.1, label %then, label %else
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then:
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call void @escape_writeonly(i32* %a)
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br label %exit
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else:
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%r = call i32 @getval()
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br label %exit
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exit:
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%p = phi i32 [ 0, %then ], [ %r, %else ]
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store i32 99, i32* %a, align 4
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call void @clobber()
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ret i32 %p
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}
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define i32 @test_captured_before_call_other_blocks_2(i1 %c.1) {
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; CHECK-LABEL: @test_captured_before_call_other_blocks_2(
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
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; CHECK-NEXT: store i32 55, i32* [[A]], align 4
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; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[ELSE:%.*]]
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; CHECK: then:
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; CHECK-NEXT: br label [[EXIT:%.*]]
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; CHECK: else:
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; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
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; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: [[P:%.*]] = phi i32 [ 0, [[THEN]] ], [ [[R]], [[ELSE]] ]
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; CHECK-NEXT: store i32 99, i32* [[A]], align 4
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; CHECK-NEXT: call void @clobber()
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; CHECK-NEXT: ret i32 [[P]]
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;
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%a = alloca i32, align 4
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store i32 55, i32* %a
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br i1 %c.1, label %then, label %else
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then:
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br label %exit
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else:
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call void @escape_and_clobber(i32* %a)
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%r = call i32 @getval()
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br label %exit
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exit:
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%p = phi i32 [ 0, %then ], [ %r, %else ]
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store i32 99, i32* %a, align 4
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call void @clobber()
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ret i32 %p
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}
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define i32 @test_captured_before_call_other_blocks_4(i1 %c.1) {
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; CHECK-LABEL: @test_captured_before_call_other_blocks_4(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
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; CHECK-NEXT: store i32 55, i32* [[A]], align 4
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; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
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; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
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; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[EXIT:%.*]]
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; CHECK: then:
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; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: [[P:%.*]] = phi i32 [ 0, [[THEN]] ], [ [[R]], [[ENTRY:%.*]] ]
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; CHECK-NEXT: store i32 99, i32* [[A]], align 4
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; CHECK-NEXT: call void @clobber()
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; CHECK-NEXT: ret i32 [[P]]
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;
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entry:
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%a = alloca i32, align 4
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store i32 55, i32* %a
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call void @escape_writeonly(i32* %a)
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%r = call i32 @getval()
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br i1 %c.1, label %then, label %exit
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then:
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call void @escape_writeonly(i32* %a)
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br label %exit
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exit:
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%p = phi i32 [ 0, %then ], [ %r, %entry ]
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store i32 99, i32* %a, align 4
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call void @clobber()
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ret i32 %p
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}
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define i32 @test_captured_before_call_other_blocks_5(i1 %c.1) {
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; CHECK-LABEL: @test_captured_before_call_other_blocks_5(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
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; CHECK-NEXT: store i32 55, i32* [[A]], align 4
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; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[EXIT:%.*]]
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; CHECK: then:
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; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
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; CHECK-NEXT: store i32 99, i32* [[A]], align 4
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; CHECK-NEXT: call void @clobber()
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; CHECK-NEXT: ret i32 [[R]]
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;
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entry:
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%a = alloca i32, align 4
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store i32 55, i32* %a
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br i1 %c.1, label %then, label %exit
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then:
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call void @escape_writeonly(i32* %a)
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br label %exit
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exit:
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%r = call i32 @getval()
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store i32 99, i32* %a, align 4
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call void @clobber()
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ret i32 %r
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}
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define i32 @test_captured_before_call_other_blocks_6(i1 %c.1) {
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; CHECK-LABEL: @test_captured_before_call_other_blocks_6(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
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; CHECK-NEXT: store i32 55, i32* [[A]], align 4
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; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[EXIT:%.*]]
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; CHECK: then:
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; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
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; CHECK-NEXT: store i32 99, i32* [[A]], align 4
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; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
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; CHECK-NEXT: call void @clobber()
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; CHECK-NEXT: ret i32 [[R]]
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;
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entry:
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%a = alloca i32, align 4
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store i32 55, i32* %a
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br i1 %c.1, label %then, label %exit
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then:
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call void @escape_writeonly(i32* %a)
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br label %exit
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exit:
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%r = call i32 @getval()
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store i32 99, i32* %a, align 4
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call void @escape_writeonly(i32* %a)
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call void @clobber()
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ret i32 %r
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}
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define i32 @test_not_captured_before_call_other_blocks_1(i1 %c.1) {
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; CHECK-LABEL: @test_not_captured_before_call_other_blocks_1(
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
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; CHECK-NEXT: store i32 99, i32* [[A]], align 4
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; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[ELSE:%.*]]
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; CHECK: then:
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; CHECK-NEXT: br label [[EXIT:%.*]]
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; CHECK: else:
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
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; CHECK-NEXT: ret i32 [[R]]
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;
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%a = alloca i32, align 4
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store i32 55, i32* %a
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%r = call i32 @getval()
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store i32 99, i32* %a, align 4
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br i1 %c.1, label %then, label %else
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then:
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br label %exit
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else:
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br label %exit
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exit:
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call void @escape_and_clobber(i32* %a)
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ret i32 %r
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}
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define i32 @test_not_captured_before_call_other_blocks_2(i1 %c.1) {
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; CHECK-LABEL: @test_not_captured_before_call_other_blocks_2(
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
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; CHECK-NEXT: store i32 99, i32* [[A]], align 4
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; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[ELSE:%.*]]
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; CHECK: then:
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; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
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; CHECK-NEXT: br label [[EXIT:%.*]]
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; CHECK: else:
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; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: ret i32 [[R]]
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;
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%a = alloca i32, align 4
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store i32 55, i32* %a
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%r = call i32 @getval()
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store i32 99, i32* %a, align 4
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br i1 %c.1, label %then, label %else
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then:
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call void @escape_and_clobber(i32* %a)
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br label %exit
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else:
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call void @escape_and_clobber(i32* %a)
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br label %exit
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exit:
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ret i32 %r
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}
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define i32 @test_not_captured_before_call_other_blocks_3(i1 %c.1) {
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; CHECK-LABEL: @test_not_captured_before_call_other_blocks_3(
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
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; CHECK-NEXT: store i32 99, i32* [[A]], align 4
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; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[ELSE:%.*]]
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; CHECK: then:
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; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
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; CHECK-NEXT: br label [[EXIT:%.*]]
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; CHECK: else:
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: ret i32 [[R]]
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;
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%a = alloca i32, align 4
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store i32 55, i32* %a
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%r = call i32 @getval()
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store i32 99, i32* %a, align 4
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br i1 %c.1, label %then, label %else
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then:
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call void @escape_and_clobber(i32* %a)
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br label %exit
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else:
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br label %exit
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exit:
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ret i32 %r
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}
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define i32 @test_not_captured_before_call_other_blocks_4(i1 %c.1) {
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; CHECK-LABEL: @test_not_captured_before_call_other_blocks_4(
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
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; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[ELSE:%.*]]
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; CHECK: then:
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; CHECK-NEXT: br label [[EXIT:%.*]]
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; CHECK: else:
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; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
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; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: [[P:%.*]] = phi i32 [ 0, [[THEN]] ], [ [[R]], [[ELSE]] ]
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; CHECK-NEXT: store i32 99, i32* [[A]], align 4
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; CHECK-NEXT: call void @clobber()
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; CHECK-NEXT: ret i32 [[P]]
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;
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%a = alloca i32, align 4
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store i32 55, i32* %a
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br i1 %c.1, label %then, label %else
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then:
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br label %exit
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else:
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%r = call i32 @getval()
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call void @escape_writeonly(i32* %a)
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br label %exit
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exit:
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%p = phi i32 [ 0, %then ], [ %r, %else ]
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store i32 99, i32* %a, align 4
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call void @clobber()
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ret i32 %p
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}
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define i32 @test_not_captured_before_call_other_blocks_5(i1 %c.1) {
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; CHECK-LABEL: @test_not_captured_before_call_other_blocks_5(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
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; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[EXIT:%.*]]
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; CHECK: then:
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; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
|
|
; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
|
|
; CHECK-NEXT: br label [[EXIT]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: [[P:%.*]] = phi i32 [ [[R]], [[THEN]] ], [ 0, [[ENTRY:%.*]] ]
|
|
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
|
|
; CHECK-NEXT: call void @clobber()
|
|
; CHECK-NEXT: ret i32 [[P]]
|
|
;
|
|
entry:
|
|
%a = alloca i32, align 4
|
|
store i32 55, i32* %a
|
|
br i1 %c.1, label %then, label %exit
|
|
|
|
then:
|
|
%r = call i32 @getval()
|
|
call void @escape_writeonly(i32* %a)
|
|
br label %exit
|
|
|
|
exit:
|
|
%p = phi i32 [ %r, %then ], [ 0, %entry ]
|
|
store i32 99, i32* %a, align 4
|
|
call void @clobber()
|
|
ret i32 %p
|
|
}
|
|
|
|
define i32 @test_not_captured_before_call_other_blocks_6(i1 %c.1) {
|
|
; CHECK-LABEL: @test_not_captured_before_call_other_blocks_6(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
|
|
; CHECK-NEXT: store i32 55, i32* [[A]], align 4
|
|
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[EXIT:%.*]]
|
|
; CHECK: then:
|
|
; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
|
|
; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
|
|
; CHECK-NEXT: br label [[EXIT]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: [[P:%.*]] = phi i32 [ [[R]], [[THEN]] ], [ 0, [[ENTRY:%.*]] ]
|
|
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
|
|
; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
|
|
; CHECK-NEXT: call void @clobber()
|
|
; CHECK-NEXT: ret i32 [[P]]
|
|
;
|
|
entry:
|
|
%a = alloca i32, align 4
|
|
store i32 55, i32* %a
|
|
br i1 %c.1, label %then, label %exit
|
|
|
|
then:
|
|
%r = call i32 @getval()
|
|
call void @escape_writeonly(i32* %a)
|
|
br label %exit
|
|
|
|
exit:
|
|
%p = phi i32 [ %r, %then ], [ 0, %entry ]
|
|
store i32 99, i32* %a, align 4
|
|
call void @escape_writeonly(i32* %a)
|
|
call void @clobber()
|
|
ret i32 %p
|
|
}
|
|
|
|
define i32 @test_not_captured_before_call_other_blocks_7(i1 %c.1) {
|
|
; CHECK-LABEL: @test_not_captured_before_call_other_blocks_7(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
|
|
; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
|
|
; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
|
|
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[EXIT:%.*]]
|
|
; CHECK: then:
|
|
; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
|
|
; CHECK-NEXT: br label [[EXIT]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: [[P:%.*]] = phi i32 [ 0, [[THEN]] ], [ [[R]], [[ENTRY:%.*]] ]
|
|
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
|
|
; CHECK-NEXT: call void @clobber()
|
|
; CHECK-NEXT: ret i32 [[P]]
|
|
;
|
|
entry:
|
|
%a = alloca i32, align 4
|
|
store i32 55, i32* %a
|
|
%r = call i32 @getval()
|
|
call void @escape_writeonly(i32* %a)
|
|
br i1 %c.1, label %then, label %exit
|
|
|
|
then:
|
|
call void @escape_writeonly(i32* %a)
|
|
br label %exit
|
|
|
|
exit:
|
|
%p = phi i32 [ 0, %then ], [ %r, %entry ]
|
|
store i32 99, i32* %a, align 4
|
|
call void @clobber()
|
|
ret i32 %p
|
|
}
|
|
|
|
define i32 @test_not_captured_before_call_same_bb_but_read() {
|
|
; CHECK-LABEL: @test_not_captured_before_call_same_bb_but_read(
|
|
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
|
|
; CHECK-NEXT: store i32 55, i32* [[A]], align 4
|
|
; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
|
|
; CHECK-NEXT: [[LV:%.*]] = load i32, i32* [[A]], align 4
|
|
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
|
|
; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
|
|
; CHECK-NEXT: [[RES:%.*]] = add i32 [[R]], [[LV]]
|
|
; CHECK-NEXT: ret i32 [[RES]]
|
|
;
|
|
%a = alloca i32, align 4
|
|
store i32 55, i32* %a
|
|
%r = call i32 @getval()
|
|
%lv = load i32, i32* %a
|
|
store i32 99, i32* %a, align 4
|
|
call void @escape_and_clobber(i32* %a)
|
|
%res = add i32 %r, %lv
|
|
ret i32 %res
|
|
}
|
|
|
|
define i32 @test_captured_after_loop(i1 %c.1) {
|
|
; CHECK-LABEL: @test_captured_after_loop(
|
|
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
|
|
; CHECK-NEXT: br label [[LOOP:%.*]]
|
|
; CHECK: loop:
|
|
; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
|
|
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
|
|
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[LOOP]], label [[EXIT:%.*]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
|
|
; CHECK-NEXT: ret i32 [[R]]
|
|
;
|
|
%a = alloca i32, align 4
|
|
store i32 55, i32* %a
|
|
br label %loop
|
|
|
|
loop:
|
|
%r = call i32 @getval()
|
|
store i32 99, i32* %a, align 4
|
|
br i1 %c.1, label %loop, label %exit
|
|
|
|
exit:
|
|
call void @escape_and_clobber(i32* %a)
|
|
ret i32 %r
|
|
}
|
|
|
|
define i32 @test_captured_in_loop(i1 %c.1) {
|
|
; CHECK-LABEL: @test_captured_in_loop(
|
|
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
|
|
; CHECK-NEXT: store i32 55, i32* [[A]], align 4
|
|
; CHECK-NEXT: br label [[LOOP:%.*]]
|
|
; CHECK: loop:
|
|
; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
|
|
; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
|
|
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
|
|
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[LOOP]], label [[EXIT:%.*]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
|
|
; CHECK-NEXT: ret i32 [[R]]
|
|
;
|
|
%a = alloca i32, align 4
|
|
store i32 55, i32* %a
|
|
br label %loop
|
|
|
|
loop:
|
|
%r = call i32 @getval()
|
|
call void @escape_writeonly(i32* %a)
|
|
store i32 99, i32* %a, align 4
|
|
br i1 %c.1, label %loop, label %exit
|
|
|
|
exit:
|
|
call void @escape_and_clobber(i32* %a)
|
|
ret i32 %r
|
|
}
|
|
|
|
declare void @llvm.memcpy.p0i8.p0i8.i64(i8*, i8*, i64, i1)
|
|
define void @test_escaping_store_removed(i8* %src, i64** %escape) {
|
|
; CHECK-LABEL: @test_escaping_store_removed(
|
|
; CHECK-NEXT: bb:
|
|
; CHECK-NEXT: [[A:%.*]] = alloca i64, align 8
|
|
; CHECK-NEXT: [[EXT_A:%.*]] = bitcast i64* [[A]] to i8*
|
|
; CHECK-NEXT: call void @clobber()
|
|
; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[EXT_A]], i8* [[SRC:%.*]], i64 8, i1 false)
|
|
; CHECK-NEXT: store i64* [[A]], i64** [[ESCAPE:%.*]], align 8
|
|
; CHECK-NEXT: call void @clobber()
|
|
; CHECK-NEXT: store i64 99, i64* [[A]], align 8
|
|
; CHECK-NEXT: call void @clobber()
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
bb:
|
|
%a = alloca i64, align 8
|
|
%ext.a = bitcast i64* %a to i8*
|
|
store i64 0, i64* %a
|
|
call void @clobber()
|
|
call void @llvm.memcpy.p0i8.p0i8.i64(i8* %ext.a, i8* %src, i64 8, i1 false)
|
|
store i64* %a, i64** %escape, align 8
|
|
store i64* %a, i64** %escape, align 8
|
|
call void @clobber()
|
|
store i64 99, i64* %a
|
|
call void @clobber()
|
|
ret void
|
|
}
|
|
|
|
|
|
define void @test_invoke_captures() personality i8* undef {
|
|
; CHECK-LABEL: @test_invoke_captures(
|
|
; CHECK-NEXT: bb:
|
|
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
|
|
; CHECK-NEXT: invoke void @clobber()
|
|
; CHECK-NEXT: to label [[BB2:%.*]] unwind label [[BB5:%.*]]
|
|
; CHECK: bb2:
|
|
; CHECK-NEXT: store i32 0, i32* [[A]], align 8
|
|
; CHECK-NEXT: invoke void @escape(i32* [[A]])
|
|
; CHECK-NEXT: to label [[BB9:%.*]] unwind label [[BB10:%.*]]
|
|
; CHECK: bb4:
|
|
; CHECK-NEXT: ret void
|
|
; CHECK: bb5:
|
|
; CHECK-NEXT: [[LP_1:%.*]] = landingpad { i8*, i32 }
|
|
; CHECK-NEXT: cleanup
|
|
; CHECK-NEXT: ret void
|
|
; CHECK: bb9:
|
|
; CHECK-NEXT: ret void
|
|
; CHECK: bb10:
|
|
; CHECK-NEXT: [[LP_2:%.*]] = landingpad { i8*, i32 }
|
|
; CHECK-NEXT: cleanup
|
|
; CHECK-NEXT: unreachable
|
|
;
|
|
bb:
|
|
%a = alloca i32
|
|
store i32 99, i32* %a
|
|
invoke void @clobber()
|
|
to label %bb2 unwind label %bb5
|
|
|
|
bb2:
|
|
store i32 0, i32* %a, align 8
|
|
invoke void @escape(i32* %a)
|
|
to label %bb9 unwind label %bb10
|
|
|
|
bb4:
|
|
ret void
|
|
|
|
bb5:
|
|
%lp.1 = landingpad { i8*, i32 }
|
|
cleanup
|
|
ret void
|
|
|
|
bb9:
|
|
ret void
|
|
|
|
bb10:
|
|
%lp.2 = landingpad { i8*, i32 }
|
|
cleanup
|
|
unreachable
|
|
}
|
|
|
|
declare noalias i32* @alloc() nounwind
|
|
declare i32 @getval_nounwind() nounwind
|
|
|
|
define i32 @test_not_captured_before_load_same_bb_noalias_call() {
|
|
; CHECK-LABEL: @test_not_captured_before_load_same_bb_noalias_call(
|
|
; CHECK-NEXT: [[A:%.*]] = call i32* @alloc()
|
|
; CHECK-NEXT: [[R:%.*]] = call i32 @getval_nounwind()
|
|
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
|
|
; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
|
|
; CHECK-NEXT: ret i32 [[R]]
|
|
;
|
|
%a = call i32* @alloc()
|
|
store i32 55, i32* %a
|
|
%r = call i32 @getval_nounwind()
|
|
store i32 99, i32* %a, align 4
|
|
call void @escape_and_clobber(i32* %a)
|
|
ret i32 %r
|
|
}
|
|
|
|
define i32 @test_not_captured_before_load_same_bb_noalias_arg(i32* noalias %a) {
|
|
; CHECK-LABEL: @test_not_captured_before_load_same_bb_noalias_arg(
|
|
; CHECK-NEXT: [[R:%.*]] = call i32 @getval_nounwind()
|
|
; CHECK-NEXT: store i32 99, i32* [[A:%.*]], align 4
|
|
; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
|
|
; CHECK-NEXT: ret i32 [[R]]
|
|
;
|
|
store i32 55, i32* %a
|
|
%r = call i32 @getval_nounwind()
|
|
store i32 99, i32* %a, align 4
|
|
call void @escape_and_clobber(i32* %a)
|
|
ret i32 %r
|
|
}
|