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b3487aa334
This option has been disabled for a while, and it is going away so I can clean up the coalescer code. The tests that required physreg joining to be enabled were almost all of the form "tiny function with interference between arguments and return value". Such functions are usually inlined in the real world. The problem exposed by phys_subreg_coalesce-3.ll is real, but fairly rare. llvm-svn: 157027
20 lines
501 B
LLVM
20 lines
501 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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