afa178d360
The implementation is mostly based on the one existing for the nsw and nuw flags. If the exact flag is present, the corresponding operation returns a poison value when the result is not exact. (For a division, if rounding happens; for a right shift, if a non-zero bit is shifted out.)
15 lines
508 B
LLVM
15 lines
508 B
LLVM
; RUN: mlir-translate -import-llvm -split-input-file %s | FileCheck %s
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; CHECK-LABEL: @exactflag_inst
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define void @exactflag_inst(i64 %arg1, i64 %arg2) {
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; CHECK: llvm.udiv exact %{{.*}}, %{{.*}} : i64
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%1 = udiv exact i64 %arg1, %arg2
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; CHECK: llvm.sdiv exact %{{.*}}, %{{.*}} : i64
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%2 = sdiv exact i64 %arg1, %arg2
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; CHECK: llvm.lshr exact %{{.*}}, %{{.*}} : i64
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%3 = lshr exact i64 %arg1, %arg2
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; CHECK: llvm.ashr exact %{{.*}}, %{{.*}} : i64
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%4 = ashr exact i64 %arg1, %arg2
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ret void
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}
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