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https://github.com/c64scene-ar/llvm-6502.git
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50b8835451
Summary: As a side-quest for D6629 jvoung pointed out that I should use -verify-machineinstrs and this found a bug in x86-32's handling of EFLAGS for PUSHF/POPF. This patch fixes the use/def, and adds -verify-machineinstrs to all x86 tests which contain 'EFLAGS'. One exception: this patch leaves inline-asm-fpstack.ll as-is because it fails -verify-machineinstrs in a way unrelated to EFLAGS. This patch also modifies cmpxchg-clobber-flags.ll along the lines of what D6629 already does by also testing i386. Test Plan: ninja check Reviewers: t.p.northover, jvoung Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D6687 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224359 91177308-0d34-0410-b5e6-96231b3b80d8
58 lines
1.7 KiB
LLVM
58 lines
1.7 KiB
LLVM
; RUN-disabled: llc < %s -verify-machineinstrs -mtriple=x86_64-apple-macosx -pre-RA-sched=ilp -debug-only=pre-RA-sched \
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; RUN-disabled: 2>&1 | FileCheck %s
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; RUN: true
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; REQUIRES: asserts
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;
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; rdar:13279013: pre-RA-sched should not check all interferences and
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; repush them on the ready queue after scheduling each instruction.
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;
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; CHECK: *** List Scheduling
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; CHECK: Interfering reg EFLAGS
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; CHECK: Repushing
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; CHECK: Repushing
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; CHECK: Repushing
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; CHECK-NOT: Repushing
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; CHECK: *** Final schedule
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define i32 @test(i8* %pin) #0 {
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%g0 = getelementptr inbounds i8* %pin, i64 0
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%l0 = load i8* %g0, align 1
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%g1a = getelementptr inbounds i8* %pin, i64 1
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%l1a = load i8* %g1a, align 1
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%z1a = zext i8 %l1a to i32
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%g1b = getelementptr inbounds i8* %pin, i64 2
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%l1b = load i8* %g1b, align 1
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%z1b = zext i8 %l1b to i32
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%c1 = icmp ne i8 %l0, 0
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%x1 = xor i32 %z1a, %z1b
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%s1 = select i1 %c1, i32 %z1a, i32 %x1
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%g2a = getelementptr inbounds i8* %pin, i64 3
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%l2a = load i8* %g2a, align 1
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%z2a = zext i8 %l2a to i32
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%g2b = getelementptr inbounds i8* %pin, i64 4
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%l2b = load i8* %g2b, align 1
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%z2b = zext i8 %l2b to i32
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%x2 = xor i32 %z2a, %z2b
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%s2 = select i1 %c1, i32 %z2a, i32 %x2
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%g3a = getelementptr inbounds i8* %pin, i64 5
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%l3a = load i8* %g3a, align 1
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%z3a = zext i8 %l3a to i32
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%g3b = getelementptr inbounds i8* %pin, i64 6
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%l3b = load i8* %g3b, align 1
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%z3b = zext i8 %l3b to i32
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%x3 = xor i32 %z3a, %z3b
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%s3 = select i1 %c1, i32 %z3a, i32 %x3
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%c3 = icmp ne i8 %l1a, 0
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%c4 = icmp ne i8 %l2a, 0
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%s4 = select i1 %c3, i32 %s1, i32 %s2
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%s5 = select i1 %c4, i32 %s4, i32 %s3
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ret i32 %s5
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}
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attributes #0 = { nounwind ssp uwtable }
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