forked from OSchip/llvm-project
36 lines
1002 B
LLVM
36 lines
1002 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -O1 -S < %s | FileCheck %s
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; RUN: opt -O2 -S < %s | FileCheck %s
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; RUN: opt -O3 -S < %s | FileCheck %s
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; srem should be folded based on branch conditions
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; This can be done by IPSCCP or CVP.
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define i32 @PR57472(i32 noundef %x) {
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; CHECK-LABEL: @PR57472(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 [[X:%.*]], -1
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; CHECK-NEXT: [[REM:%.*]] = and i32 [[X]], 15
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; CHECK-NEXT: [[SPEC_SELECT:%.*]] = select i1 [[CMP]], i32 [[REM]], i32 42
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; CHECK-NEXT: ret i32 [[SPEC_SELECT]]
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;
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entry:
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%x.addr = alloca i32, align 4
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store i32 %x, ptr %x.addr, align 4
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%0 = load i32, ptr %x.addr, align 4
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%cmp = icmp sge i32 %0, 0
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br i1 %cmp, label %cond.true, label %cond.false
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cond.true:
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%1 = load i32, ptr %x.addr, align 4
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%rem = srem i32 %1, 16
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br label %cond.end
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cond.false:
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br label %cond.end
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cond.end:
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%cond = phi i32 [ %rem, %cond.true ], [ 42, %cond.false ]
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ret i32 %cond
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}
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