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26 lines
720 B
LLVM
26 lines
720 B
LLVM
; RUN: llvm-as < %s | llc -march=x86-64 > %t
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; RUN: grep negl %t | count 1
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; RUN: not grep {sub\[bwlq\]} %t
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; RUN: grep mov %t | count 1
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; RUN: grep {leal -4(} %t | count 1
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; ISel the add of -4 with a neg and use an lea for the rest of the
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; arithemtic.
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define i32 @test(i32 %x_offs) nounwind readnone {
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entry:
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%t0 = icmp sgt i32 %x_offs, 4 ; <i1> [#uses=1]
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br i1 %t0, label %bb.nph, label %bb2
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bb.nph: ; preds = %entry
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%tmp = add i32 %x_offs, -5 ; <i32> [#uses=1]
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%tmp6 = lshr i32 %tmp, 2 ; <i32> [#uses=1]
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%tmp7 = mul i32 %tmp6, -4 ; <i32> [#uses=1]
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%tmp8 = add i32 %tmp7, %x_offs ; <i32> [#uses=1]
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%tmp9 = add i32 %tmp8, -4 ; <i32> [#uses=1]
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ret i32 %tmp9
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bb2: ; preds = %entry
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ret i32 %x_offs
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}
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