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https://github.com/c64scene-ar/llvm-6502.git
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c537f79dcd
- Clear 'mayStore' flag when loading from the atomic variable before the spin loop - Clear kill flag from one use to multiple use in registers forming the address to that atomic variable - don't use a physical register as live-in register in BB (neither entry nor landing pad.) by copying it into virtual register (patch by Cameron Zwarich) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176538 91177308-0d34-0410-b5e6-96231b3b80d8
68 lines
1.6 KiB
LLVM
68 lines
1.6 KiB
LLVM
; RUN: llc -march=x86 -mattr=+cmov -mtriple=i386-pc-linux -verify-machineinstrs < %s | FileCheck %s -check-prefix=LINUX
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; RUN: llc -march=x86 -mtriple=i386-macosx -relocation-model=pic -verify-machineinstrs < %s | FileCheck %s -check-prefix=PIC
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@sc64 = external global i64
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define void @atomic_maxmin_i6432() {
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; LINUX: atomic_maxmin_i6432
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%1 = atomicrmw max i64* @sc64, i64 5 acquire
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; LINUX: [[LABEL:.LBB[0-9]+_[0-9]+]]
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; LINUX: cmpl
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; LINUX: setl
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; LINUX: cmpl
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; LINUX: setl
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; LINUX: cmovne
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; LINUX: cmovne
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; LINUX: lock
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; LINUX-NEXT: cmpxchg8b
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; LINUX: jne [[LABEL]]
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%2 = atomicrmw min i64* @sc64, i64 6 acquire
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; LINUX: [[LABEL:.LBB[0-9]+_[0-9]+]]
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; LINUX: cmpl
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; LINUX: setg
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; LINUX: cmpl
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; LINUX: setg
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; LINUX: cmovne
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; LINUX: cmovne
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; LINUX: lock
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; LINUX-NEXT: cmpxchg8b
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; LINUX: jne [[LABEL]]
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%3 = atomicrmw umax i64* @sc64, i64 7 acquire
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; LINUX: [[LABEL:.LBB[0-9]+_[0-9]+]]
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; LINUX: cmpl
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; LINUX: setb
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; LINUX: cmpl
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; LINUX: setb
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; LINUX: cmovne
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; LINUX: cmovne
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; LINUX: lock
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; LINUX-NEXT: cmpxchg8b
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; LINUX: jne [[LABEL]]
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%4 = atomicrmw umin i64* @sc64, i64 8 acquire
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; LINUX: [[LABEL:.LBB[0-9]+_[0-9]+]]
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; LINUX: cmpl
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; LINUX: seta
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; LINUX: cmpl
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; LINUX: seta
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; LINUX: cmovne
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; LINUX: cmovne
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; LINUX: lock
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; LINUX-NEXT: cmpxchg8b
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; LINUX: jne [[LABEL]]
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ret void
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}
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; rdar://12453106
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@id = internal global i64 0, align 8
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define void @tf_bug(i8* %ptr) nounwind {
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; PIC: tf_bug:
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; PIC: movl _id-L1$pb(
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; PIC: movl (_id-L1$pb)+4(
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%tmp1 = atomicrmw add i64* @id, i64 1 seq_cst
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%tmp2 = add i64 %tmp1, 1
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%tmp3 = bitcast i8* %ptr to i64*
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store i64 %tmp2, i64* %tmp3, align 4
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ret void
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}
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