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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
32 lines
821 B
LLVM
32 lines
821 B
LLVM
; RUN: llc < %s -march=x86-64 -mtriple=x86_64-pc-linux-gnu -show-mc-encoding | FileCheck %s
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; PR8365
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; CHECK: andl $-64, %edi # encoding: [0x83,0xe7,0xc0]
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define i64 @bra(i32 %zed) nounwind {
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%t1 = zext i32 %zed to i64
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%t2 = and i64 %t1, 4294967232
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ret i64 %t2
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}
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; CHECK: orq $2, %rdi # encoding: [0x48,0x83,0xcf,0x02]
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define void @foo(i64 %zed, i64* %x) nounwind {
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%t1 = and i64 %zed, -4
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%t2 = or i64 %t1, 2
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store i64 %t2, i64* %x, align 8
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ret void
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}
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define i64 @bar(i64 %zed) nounwind {
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; CHECK: andl $42, %edi # encoding: [0x83,0xe7,0x2a]
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%t1 = and i64 %zed, 42
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ret i64 %t1
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}
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define i64 @baz(i64 %zed) nounwind {
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; CHECK: andl $2147483647, %edi # encoding: [0x81,0xe7,0xff,0xff,0xff,0x7f]
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%t1 = and i64 %zed, 2147483647
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ret i64 %t1
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}
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