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54ac1d95cd
Previously the patterns didn't have high enough priority and we would only use the GR32 form if the only the upper 32 or 56 bits were zero. Fixes PR23100. llvm-svn: 234075
27 lines
790 B
LLVM
27 lines
790 B
LLVM
; RUN: llc < %s -mtriple=i686-apple-darwin | FileCheck -check-prefix=DARWIN %s
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; RUN: opt < %s -O2 | llc -mtriple=x86_64-apple-darwin | FileCheck -check-prefix=DARWIN-OPT %s
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; The dag combiner should fold together (x&127)|(y&16711680) -> (x|y)&c1
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; in this case.
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define i32 @test1(i32 %x, i16 %y) {
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%tmp1 = zext i16 %y to i32
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%tmp2 = and i32 %tmp1, 127
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%tmp4 = shl i32 %x, 16
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%tmp5 = and i32 %tmp4, 16711680
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%tmp6 = or i32 %tmp2, %tmp5
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ret i32 %tmp6
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; DARWIN: andl $16711807, %eax
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}
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; <rdar://problem/7529774> The optimizer shouldn't fold this into (and (or, C), D)
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; if (C & D) == 0
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define i64 @test2(i64 %x) nounwind readnone ssp {
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entry:
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%tmp1 = and i64 %x, 123127
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%tmp2 = or i64 %tmp1, 3
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ret i64 %tmp2
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; DARWIN-OPT: andl $123124
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; DARWIN-OPT-NEXT: leaq 3
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}
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