forked from OSchip/llvm-project
38 lines
1.1 KiB
LLVM
38 lines
1.1 KiB
LLVM
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; PR28852: Check machine code sinking is not stopped by SUBREG_TO_REG.
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; RUN: llc < %s | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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; CHECK: foo
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; CHECK-NOT: imull
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; CHECK: retq
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; CHECK: imull
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define void @foo(i64 %value, i32 %kLengthBits, i32* nocapture %bits, i64* nocapture %bit_buffer_64, i32 %x) local_unnamed_addr {
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entry:
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%mul = mul i32 %x, %kLengthBits
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%add = add i32 %mul, 3
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%conv = zext i32 %add to i64
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%mul2 = mul nuw nsw i64 %conv, 5
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%sub = sub i64 64, %value
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%conv4 = trunc i64 %sub to i32
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%tmp0 = load i32, i32* %bits, align 4
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%cmp = icmp ult i32 %tmp0, %conv4
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br i1 %cmp, label %if.then, label %if.end, !prof !0
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if.then: ; preds = %entry
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%add7 = add i64 %mul2, %value
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%tmp1 = load i64, i64* %bit_buffer_64, align 8
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%add8 = add i64 %add7, %tmp1
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store i64 %add8, i64* %bit_buffer_64, align 8
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%conv9 = trunc i64 %mul2 to i32
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store i32 %conv9, i32* %bits, align 4
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br label %if.end
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if.end: ; preds = %if.then, %entry
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ret void
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}
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!0 = !{!"branch_weights", i32 1, i32 2000}
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