28 lines
1.3 KiB
LLVM
28 lines
1.3 KiB
LLVM
; RUN: opt -S -disable-output -passes="print<demanded-bits>" < %s 2>&1 | FileCheck %s
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; CHECK-LABEL: Printing analysis 'Demanded Bits Analysis' for function 'test_mul':
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; CHECK-DAG: DemandedBits: 0xff for %1 = add nsw i32 %a, 5
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; CHECK-DAG: DemandedBits: 0xff for %3 = trunc i32 %2 to i8
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; CHECK-DAG: DemandedBits: 0xff for %2 = mul nsw i32 %1, %b
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; CHECK-DAG: DemandedBits: 0x1 for %4 = trunc i32 %2 to i1
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; CHECK-DAG: DemandedBits: 0xff for %5 = zext i1 %4 to i8
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; CHECK-DAG: DemandedBits: 0xff for %6 = add nsw i8 %3, %5
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; CHECK-DAG: DemandedBits: 0xff for %a in %1 = add nsw i32 %a, 5
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; CHECK-DAG: DemandedBits: 0xff for 5 in %1 = add nsw i32 %a, 5
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; CHECK-DAG: DemandedBits: 0xff for %1 in %2 = mul nsw i32 %1, %b
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; CHECK-DAG: DemandedBits: 0xff for %b in %2 = mul nsw i32 %1, %b
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; CHECK-DAG: DemandedBits: 0xff for %2 in %3 = trunc i32 %2 to i8
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; CHECK-DAG: DemandedBits: 0x1 for %2 in %4 = trunc i32 %2 to i1
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; CHECK-DAG: DemandedBits: 0x1 for %4 in %5 = zext i1 %4 to i8
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; CHECK-DAG: DemandedBits: 0xff for %3 in %6 = add nsw i8 %3, %5
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; CHECK-DAG: DemandedBits: 0xff for %5 in %6 = add nsw i8 %3, %5
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define i8 @test_mul(i32 %a, i32 %b) {
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%1 = add nsw i32 %a, 5
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%2 = mul nsw i32 %1, %b
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%3 = trunc i32 %2 to i8
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%4 = trunc i32 %2 to i1
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%5 = zext i1 %4 to i8
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%6 = add nsw i8 %3, %5
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ret i8 %6
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}
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