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[JumpThreading] Add a test for D84598; NFC
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py | ||
; RUN: opt -jump-threading -S < %s | FileCheck %s | ||
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declare i32 @f1() | ||
declare i32 @f2() | ||
declare void @f3() | ||
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define i32 @test1(i1 %cond) { | ||
; CHECK-LABEL: @test1( | ||
; CHECK-NEXT: br i1 [[COND:%.*]], label [[T1:%.*]], label [[F1:%.*]] | ||
; CHECK: T1: | ||
; CHECK-NEXT: [[V1:%.*]] = call i32 @f1() | ||
; CHECK-NEXT: br label [[MERGE:%.*]] | ||
; CHECK: F1: | ||
; CHECK-NEXT: [[V2:%.*]] = call i32 @f2() | ||
; CHECK-NEXT: br label [[MERGE]] | ||
; CHECK: Merge: | ||
; CHECK-NEXT: [[A:%.*]] = phi i1 [ true, [[T1]] ], [ false, [[F1]] ] | ||
; CHECK-NEXT: [[B:%.*]] = phi i32 [ [[V1]], [[T1]] ], [ [[V2]], [[F1]] ] | ||
; CHECK-NEXT: [[A_FR:%.*]] = freeze i1 [[A]] | ||
; CHECK-NEXT: br i1 [[A_FR]], label [[T2:%.*]], label [[F2:%.*]] | ||
; CHECK: T2: | ||
; CHECK-NEXT: call void @f3() | ||
; CHECK-NEXT: ret i32 [[B]] | ||
; CHECK: F2: | ||
; CHECK-NEXT: ret i32 [[B]] | ||
; | ||
br i1 %cond, label %T1, label %F1 | ||
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T1: | ||
%v1 = call i32 @f1() | ||
br label %Merge | ||
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F1: | ||
%v2 = call i32 @f2() | ||
br label %Merge | ||
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Merge: | ||
%A = phi i1 [true, %T1], [false, %F1] | ||
%B = phi i32 [%v1, %T1], [%v2, %F1] | ||
%A.fr = freeze i1 %A | ||
br i1 %A.fr, label %T2, label %F2 | ||
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T2: | ||
call void @f3() | ||
ret i32 %B | ||
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F2: | ||
ret i32 %B | ||
} | ||
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define i32 @test2(i1 %cond, i1 %cond2) { | ||
; CHECK-LABEL: @test2( | ||
; CHECK-NEXT: br i1 [[COND:%.*]], label [[T1:%.*]], label [[F1:%.*]] | ||
; CHECK: T1: | ||
; CHECK-NEXT: [[V1:%.*]] = call i32 @f1() | ||
; CHECK-NEXT: br label [[MERGE:%.*]] | ||
; CHECK: F1: | ||
; CHECK-NEXT: [[V2:%.*]] = call i32 @f2() | ||
; CHECK-NEXT: br label [[MERGE]] | ||
; CHECK: Merge: | ||
; CHECK-NEXT: [[A:%.*]] = phi i1 [ true, [[T1]] ], [ [[COND2:%.*]], [[F1]] ] | ||
; CHECK-NEXT: [[B:%.*]] = phi i32 [ [[V1]], [[T1]] ], [ [[V2]], [[F1]] ] | ||
; CHECK-NEXT: [[A_FR:%.*]] = freeze i1 [[A]] | ||
; CHECK-NEXT: br i1 [[A_FR]], label [[T2:%.*]], label [[F2:%.*]] | ||
; CHECK: T2: | ||
; CHECK-NEXT: call void @f3() | ||
; CHECK-NEXT: ret i32 [[B]] | ||
; CHECK: F2: | ||
; CHECK-NEXT: ret i32 [[B]] | ||
; | ||
br i1 %cond, label %T1, label %F1 | ||
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T1: | ||
%v1 = call i32 @f1() | ||
br label %Merge | ||
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F1: | ||
%v2 = call i32 @f2() | ||
br label %Merge | ||
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Merge: | ||
%A = phi i1 [true, %T1], [%cond2, %F1] | ||
%B = phi i32 [%v1, %T1], [%v2, %F1] | ||
%A.fr = freeze i1 %A | ||
br i1 %A.fr, label %T2, label %F2 | ||
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T2: | ||
call void @f3() | ||
ret i32 %B | ||
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F2: | ||
ret i32 %B | ||
} |