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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
41 lines
1.7 KiB
LLVM
41 lines
1.7 KiB
LLVM
; RUN: llc < %s -verify-machineinstrs -enable-misched -verify-misched
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10"
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; This function contains a cmp instruction with two users.
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; Hoisting the last use requires trimming the EFLAGS live range to the second.
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define void @rdar13353090(i8* %plane, i64 %_x1, i64 %_x2) {
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entry:
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%cmp = icmp ult i64 %_x1, %_x2
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%cond = select i1 %cmp, i64 %_x1, i64 %_x2
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%cond10 = select i1 %cmp, i64 %_x2, i64 %_x1
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%0 = load i64* null, align 8
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%cmp16 = icmp ult i64 %cond, %0
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%cmp23 = icmp ugt i64 %cond10, 0
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br i1 %cmp16, label %land.lhs.true21, label %return
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land.lhs.true21: ; preds = %entry
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%sub = add i64 %0, -1
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br i1 %cmp23, label %if.then24, label %return
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if.then24: ; preds = %land.lhs.true21
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%cmp16.i = icmp ult i64 %cond, %sub
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%cond20.i = select i1 %cmp16.i, i64 %cond, i64 %sub
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%add21.i = add i64 0, %cond20.i
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br label %for.body34.i
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for.body34.i: ; preds = %for.inc39.i, %if.then24
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%index.178.i = phi i64 [ %add21.i, %if.then24 ], [ %inc41.i, %for.inc39.i ]
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%arrayidx35.i = getelementptr inbounds i8* %plane, i64 %index.178.i
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%1 = load i8* %arrayidx35.i, align 1
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%tobool36.i = icmp eq i8 %1, 0
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br i1 %tobool36.i, label %for.inc39.i, label %return
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for.inc39.i: ; preds = %for.body34.i
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%inc41.i = add i64 %index.178.i, 1
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br i1 undef, label %return, label %for.body34.i
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return: ; preds = %for.inc39.i, %for.body34.i, %land.lhs.true21, %entry
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ret void
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}
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