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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
68 lines
2.4 KiB
LLVM
68 lines
2.4 KiB
LLVM
; RUN: llc -verify-machineinstrs -mcpu=corei7-avx %s -o - | FileCheck %s --check-prefix=CHECK --check-prefix=NO-FLAGS
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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-macosx10.9.0"
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%struct.__va_list_tag = type { i32, i32, i8*, i8* }
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; Check that vastart gets the right thing.
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define i32 @sum(i32 %count, ...) nounwind optsize ssp uwtable {
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; CHECK: testb %al, %al
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; CHECK-NEXT: je
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; CHECK-NEXT: ## BB#{{[0-9]+}}:
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; CHECK-NEXT: vmovaps %xmm0, 48(%rsp)
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; CHECK-NEXT: vmovaps %xmm1, 64(%rsp)
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; CHECK-NEXT: vmovaps %xmm2, 80(%rsp)
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; CHECK-NEXT: vmovaps %xmm3, 96(%rsp)
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; CHECK-NEXT: vmovaps %xmm4, 112(%rsp)
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; CHECK-NEXT: vmovaps %xmm5, 128(%rsp)
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; CHECK-NEXT: vmovaps %xmm6, 144(%rsp)
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; CHECK-NEXT: vmovaps %xmm7, 160(%rsp)
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; Check that [EFLAGS] hasn't been pulled in.
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; NO-FLAGS-NOT: %flags
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%ap = alloca [1 x %struct.__va_list_tag], align 16
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%1 = bitcast [1 x %struct.__va_list_tag]* %ap to i8*
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call void @llvm.va_start(i8* %1)
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%2 = icmp sgt i32 %count, 0
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br i1 %2, label %.lr.ph, label %._crit_edge
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.lr.ph: ; preds = %0
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%3 = getelementptr inbounds [1 x %struct.__va_list_tag]* %ap, i64 0, i64 0, i32 0
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%4 = getelementptr inbounds [1 x %struct.__va_list_tag]* %ap, i64 0, i64 0, i32 2
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%.pre = load i32* %3, align 16
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br label %5
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; <label>:5 ; preds = %.lr.ph, %13
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%6 = phi i32 [ %.pre, %.lr.ph ], [ %14, %13 ]
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%.01 = phi i32 [ %count, %.lr.ph ], [ %15, %13 ]
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%7 = icmp ult i32 %6, 41
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br i1 %7, label %8, label %10
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; <label>:8 ; preds = %5
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%9 = add i32 %6, 8
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store i32 %9, i32* %3, align 16
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br label %13
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; <label>:10 ; preds = %5
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%11 = load i8** %4, align 8
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%12 = getelementptr i8* %11, i64 8
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store i8* %12, i8** %4, align 8
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br label %13
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; <label>:13 ; preds = %10, %8
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%14 = phi i32 [ %6, %10 ], [ %9, %8 ]
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%15 = add nsw i32 %.01, 1
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%16 = icmp sgt i32 %15, 0
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br i1 %16, label %5, label %._crit_edge
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._crit_edge: ; preds = %13, %0
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%.0.lcssa = phi i32 [ %count, %0 ], [ %15, %13 ]
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call void @llvm.va_end(i8* %1)
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ret i32 %.0.lcssa
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}
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declare void @llvm.va_start(i8*) nounwind
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declare void @llvm.va_end(i8*) nounwind
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