26 lines
610 B
LLVM
26 lines
610 B
LLVM
; RUN: opt < %s -analyze -scalar-evolution | FileCheck %s
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; Check that we convert
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; trunc(C * a) -> trunc(C) * trunc(a)
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; if C is a constant.
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; CHECK-LABEL: @trunc_of_mul
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define i8 @trunc_of_mul(i32 %a) {
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%b = mul i32 %a, 100
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; CHECK: %c
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; CHECK-NEXT: --> (100 * (trunc i32 %a to i8))
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%c = trunc i32 %b to i8
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ret i8 %c
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}
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; Check that we convert
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; trunc(C + a) -> trunc(C) + trunc(a)
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; if C is a constant.
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; CHECK-LABEL: @trunc_of_add
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define i8 @trunc_of_add(i32 %a) {
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%b = add i32 %a, 100
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; CHECK: %c
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; CHECK-NEXT: --> (100 + (trunc i32 %a to i8))
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%c = trunc i32 %b to i8
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ret i8 %c
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}
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