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3cc7de085d
On some platforms (like MSP430) the second element of the result structure for SMULO/UMULO may have a shorter type than the one returned by SetCC. We need to truncate it to the right type, or else some incorrect code may be generated later on. This fixes issue https://github.com/rust-lang/rust/issues/37829 Patch by Vadzim Dambrouski! Differential Revision: https://reviews.llvm.org/D27154 llvm-svn: 288857
33 lines
969 B
LLVM
33 lines
969 B
LLVM
; RUN: llc < %s -march=msp430 | FileCheck %s
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target datalayout = "e-m:e-p:16:16-i32:16:32-a:16-n8:16"
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target triple = "msp430"
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define void @foo(i16 %arg) unnamed_addr {
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entry-block:
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br i1 undef, label %bb2, label %bb3
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bb2: ; preds = %entry-block
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unreachable
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bb3: ; preds = %entry-block
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%0 = call { i16, i1 } @llvm.umul.with.overflow.i16(i16 undef, i16 %arg)
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; CHECK: call
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%1 = extractvalue { i16, i1 } %0, 1
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%2 = call i1 @llvm.expect.i1(i1 %1, i1 false)
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br i1 %2, label %panic, label %bb5
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bb5: ; preds = %bb3
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unreachable
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panic: ; preds = %bb3
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unreachable
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}
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; Function Attrs: nounwind readnone
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declare i1 @llvm.expect.i1(i1, i1) #0
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; Function Attrs: nounwind readnone
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declare { i16, i1 } @llvm.umul.with.overflow.i16(i16, i16) #0
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attributes #0 = { nounwind readnone }
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