mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-28 19:31:58 +00:00
43edafcc07
Fix a compact unwind encoding logic bug which would try to encode more callee saved registers than it should, leading to early bail out in the encoding logic and abusive use of DWARF frame mode unnecessarily. Also remove no-compact-unwind.ll which was testing the wrong thing based on this bug and move it to valid 'compact unwind' tests. Added other few more tests too. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223676 91177308-0d34-0410-b5e6-96231b3b80d8
112 lines
4.7 KiB
LLVM
112 lines
4.7 KiB
LLVM
; RUN: llc < %s -disable-fp-elim -mtriple x86_64-apple-darwin11 -mcpu corei7 | FileCheck -check-prefix=ASM %s
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; RUN: llc < %s -disable-fp-elim -mtriple x86_64-apple-darwin11 -mcpu corei7 -filetype=obj -o - \
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; RUN: | llvm-objdump -triple x86_64-apple-darwin11 -unwind-info - \
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; RUN: | FileCheck -check-prefix=CU %s
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; RUN: llc < %s -disable-fp-elim -mtriple x86_64-apple-darwin11 -mcpu corei7 \
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; RUN: | llvm-mc -triple x86_64-apple-darwin11 -filetype=obj -o - \
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; RUN: | llvm-objdump -triple x86_64-apple-darwin11 -unwind-info - \
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; RUN: | FileCheck -check-prefix=FROM-ASM %s
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; RUN: llc < %s -mtriple x86_64-apple-macosx10.8.0 -mcpu corei7 -filetype=obj -o - \
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; RUN: | llvm-objdump -triple x86_64-apple-macosx10.8.0 -unwind-info - \
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; RUN: | FileCheck -check-prefix=NOFP-CU %s
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; RUN: llc < %s -mtriple x86_64-apple-darwin11 -mcpu corei7 \
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; RUN: | llvm-mc -triple x86_64-apple-darwin11 -filetype=obj -o - \
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; RUN: | llvm-objdump -triple x86_64-apple-darwin11 -unwind-info - \
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; RUN: | FileCheck -check-prefix=NOFP-FROM-ASM %s
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%ty = type { i8* }
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@gv = external global i32
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; This is aligning the stack with a push of a random register.
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; ASM: pushq %rax
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; Even though we can't encode %rax into the compact unwind, We still want to be
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; able to generate a compact unwind encoding in this particular case.
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; CU: Contents of __compact_unwind section:
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; CU-NEXT: Entry at offset 0x0:
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; CU-NEXT: start: 0x0 _test0
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; CU-NEXT: length: 0x1e
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; CU-NEXT: compact encoding: 0x01010001
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; FROM-ASM: Contents of __compact_unwind section:
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; FROM-ASM-NEXT: Entry at offset 0x0:
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; FROM-ASM-NEXT: start: 0x0 _test0
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; FROM-ASM-NEXT: length: 0x1e
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; FROM-ASM-NEXT: compact encoding: 0x01010001
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define i8* @test0(i64 %size) {
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%addr = alloca i64, align 8
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%tmp20 = load i32* @gv, align 4
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%tmp21 = call i32 @bar()
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%tmp25 = load i64* %addr, align 8
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%tmp26 = inttoptr i64 %tmp25 to %ty*
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%tmp29 = getelementptr inbounds %ty* %tmp26, i64 0, i32 0
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%tmp34 = load i8** %tmp29, align 8
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%tmp35 = getelementptr inbounds i8* %tmp34, i64 %size
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store i8* %tmp35, i8** %tmp29, align 8
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ret i8* null
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}
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declare i32 @bar()
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%"struct.dyld::MappedRanges" = type { [400 x %struct.anon], %"struct.dyld::MappedRanges"* }
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%struct.anon = type { %class.ImageLoader*, i64, i64 }
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%class.ImageLoader = type { i32 (...)**, i8*, i8*, i32, i64, i64, i32, i32, %"struct.ImageLoader::recursive_lock"*, i16, i16, [4 x i8] }
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%"struct.ImageLoader::recursive_lock" = type { i32, i32 }
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@G1 = external hidden global %"struct.dyld::MappedRanges", align 8
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declare void @OSMemoryBarrier() optsize
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; Test the code below uses UNWIND_X86_64_MODE_STACK_IMMD compact unwind
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; encoding.
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; NOFP-CU: Entry at offset 0x20:
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; NOFP-CU-NEXT: start: 0x1d _test1
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; NOFP-CU-NEXT: length: 0x42
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; NOFP-CU-NEXT: compact encoding: 0x02040c0a
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; NOFP-FROM-ASM: Entry at offset 0x20:
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; NOFP-FROM-ASM-NEXT: start: 0x1d _test1
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; NOFP-FROM-ASM-NEXT: length: 0x42
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; NOFP-FROM-ASM-NEXT: compact encoding: 0x02040c0a
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define void @test1(%class.ImageLoader* %image) optsize ssp uwtable {
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entry:
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br label %for.cond1.preheader
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for.cond1.preheader: ; preds = %for.inc10, %entry
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%p.019 = phi %"struct.dyld::MappedRanges"* [ @G1, %entry ], [ %1, %for.inc10 ]
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br label %for.body3
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for.body3: ; preds = %for.inc, %for.cond1.preheader
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%indvars.iv = phi i64 [ 0, %for.cond1.preheader ], [ %indvars.iv.next, %for.inc ]
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%image4 = getelementptr inbounds %"struct.dyld::MappedRanges"* %p.019, i64 0, i32 0, i64 %indvars.iv, i32 0
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%0 = load %class.ImageLoader** %image4, align 8
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%cmp5 = icmp eq %class.ImageLoader* %0, %image
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br i1 %cmp5, label %if.then, label %for.inc
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if.then: ; preds = %for.body3
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tail call void @OSMemoryBarrier() optsize
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store %class.ImageLoader* null, %class.ImageLoader** %image4, align 8
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br label %for.inc
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for.inc: ; preds = %if.then, %for.body3
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%indvars.iv.next = add i64 %indvars.iv, 1
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32
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%exitcond = icmp eq i32 %lftr.wideiv, 400
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br i1 %exitcond, label %for.inc10, label %for.body3
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for.inc10: ; preds = %for.inc
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%next = getelementptr inbounds %"struct.dyld::MappedRanges"* %p.019, i64 0, i32 1
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%1 = load %"struct.dyld::MappedRanges"** %next, align 8
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%cmp = icmp eq %"struct.dyld::MappedRanges"* %1, null
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br i1 %cmp, label %for.end11, label %for.cond1.preheader
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for.end11: ; preds = %for.inc10
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ret void
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}
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