derek.holloway
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51 lines
1.7 KiB
LLVM
51 lines
1.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -passes=simplifycfg -simplifycfg-require-and-preserve-domtree=1 < %s | FileCheck %s
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target datalayout = "E-m:e-i64:64-n32:64"
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target triple = "powerpc64-unknown-linux-gnu"
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define i64 @test1(i64 %A) {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i64 [[A:%.*]], 0
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; CHECK-NEXT: [[TMP0:%.*]] = tail call i64 @llvm.ctlz.i64(i64 [[A]], i1 true)
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; CHECK-NEXT: [[SPEC_SELECT:%.*]] = select i1 [[TOBOOL]], i64 64, i64 [[TMP0]]
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; CHECK-NEXT: ret i64 [[SPEC_SELECT]]
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;
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entry:
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%tobool = icmp eq i64 %A, 0
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br i1 %tobool, label %cond.end, label %cond.true
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cond.true: ; preds = %entry
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%0 = tail call i64 @llvm.ctlz.i64(i64 %A, i1 true)
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br label %cond.end
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cond.end: ; preds = %entry, %cond.true
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%cond = phi i64 [ %0, %cond.true ], [ 64, %entry ]
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ret i64 %cond
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}
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define i64 @test1b(i64 %A) {
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; CHECK-LABEL: @test1b(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i64 [[A:%.*]], 0
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; CHECK-NEXT: [[TMP0:%.*]] = tail call i64 @llvm.cttz.i64(i64 [[A]], i1 true)
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; CHECK-NEXT: [[SPEC_SELECT:%.*]] = select i1 [[TOBOOL]], i64 64, i64 [[TMP0]]
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; CHECK-NEXT: ret i64 [[SPEC_SELECT]]
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;
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entry:
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%tobool = icmp eq i64 %A, 0
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br i1 %tobool, label %cond.end, label %cond.true
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cond.true: ; preds = %entry
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%0 = tail call i64 @llvm.cttz.i64(i64 %A, i1 true)
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br label %cond.end
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cond.end: ; preds = %entry, %cond.true
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%cond = phi i64 [ %0, %cond.true ], [ 64, %entry ]
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ret i64 %cond
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}
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declare i64 @llvm.ctlz.i64(i64, i1)
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declare i64 @llvm.cttz.i64(i64, i1)
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