compact-unwind.ll
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; RUN: llc < %s -frame-pointer=all -mtriple x86_64-apple-darwin11 -mcpu corei7 | FileCheck -check-prefix=ASM %s
; RUN: llc < %s -frame-pointer=all -mtriple x86_64-apple-darwin11 -mcpu corei7 -filetype=obj -o - \
; RUN: | llvm-objdump -triple x86_64-apple-darwin11 -unwind-info - \
; RUN: | FileCheck -check-prefix=CU %s
; RUN: llc < %s -frame-pointer=all -mtriple x86_64-apple-darwin11 -mcpu corei7 \
; RUN: | llvm-mc -triple x86_64-apple-darwin11 -filetype=obj -o - \
; RUN: | llvm-objdump -triple x86_64-apple-darwin11 -unwind-info - \
; RUN: | FileCheck -check-prefix=FROM-ASM %s
; RUN: llc < %s -mtriple x86_64-apple-macosx10.8.0 -mcpu corei7 -filetype=obj -o - \
; RUN: | llvm-objdump -triple x86_64-apple-macosx10.8.0 -unwind-info - \
; RUN: | FileCheck -check-prefix=NOFP-CU %s
; RUN: llc < %s -mtriple x86_64-apple-darwin11 -mcpu corei7 \
; RUN: | llvm-mc -triple x86_64-apple-darwin11 -filetype=obj -o - \
; RUN: | llvm-objdump -triple x86_64-apple-darwin11 -unwind-info - \
; RUN: | FileCheck -check-prefix=NOFP-FROM-ASM %s
%ty = type { i8* }
@gv = external global i32
; This is aligning the stack with a push of a random register.
; ASM: pushq %rax
; Even though we can't encode %rax into the compact unwind, We still want to be
; able to generate a compact unwind encoding in this particular case.
; CU: Contents of __compact_unwind section:
; CU-NEXT: Entry at offset 0x0:
; CU-NEXT: start: 0x0 _test0
; CU-NEXT: length: 0x1e
; CU-NEXT: compact encoding: 0x01010001
; FROM-ASM: Contents of __compact_unwind section:
; FROM-ASM-NEXT: Entry at offset 0x0:
; FROM-ASM-NEXT: start: 0x0 _test0
; FROM-ASM-NEXT: length: 0x1e
; FROM-ASM-NEXT: compact encoding: 0x01010001
define i8* @test0(i64 %size) {
%addr = alloca i64, align 8
%tmp20 = load i32, i32* @gv, align 4
%tmp21 = call i32 @bar()
%tmp25 = load i64, i64* %addr, align 8
%tmp26 = inttoptr i64 %tmp25 to %ty*
%tmp29 = getelementptr inbounds %ty, %ty* %tmp26, i64 0, i32 0
%tmp34 = load i8*, i8** %tmp29, align 8
%tmp35 = getelementptr inbounds i8, i8* %tmp34, i64 %size
store i8* %tmp35, i8** %tmp29, align 8
ret i8* null
}
declare i32 @bar()
%"struct.dyld::MappedRanges" = type { [400 x %struct.anon], %"struct.dyld::MappedRanges"* }
%struct.anon = type { %class.ImageLoader*, i64, i64 }
%class.ImageLoader = type { i32 (...)**, i8*, i8*, i32, i64, i64, i32, i32, %"struct.ImageLoader::recursive_lock"*, i16, i16, [4 x i8] }
%"struct.ImageLoader::recursive_lock" = type { i32, i32 }
@G1 = external hidden global %"struct.dyld::MappedRanges", align 8
declare void @OSMemoryBarrier() optsize
; Test the code below uses UNWIND_X86_64_MODE_STACK_IMMD compact unwind
; encoding.
; NOFP-CU: Entry at offset 0x20:
; NOFP-CU-NEXT: start: 0x1d _test1
; NOFP-CU-NEXT: length: 0x42
; NOFP-CU-NEXT: compact encoding: 0x02040c0a
; NOFP-FROM-ASM: Entry at offset 0x20:
; NOFP-FROM-ASM-NEXT: start: 0x1d _test1
; NOFP-FROM-ASM-NEXT: length: 0x42
; NOFP-FROM-ASM-NEXT: compact encoding: 0x02040c0a
define void @test1(%class.ImageLoader* %image) optsize ssp uwtable {
entry:
br label %for.cond1.preheader
for.cond1.preheader: ; preds = %for.inc10, %entry
%p.019 = phi %"struct.dyld::MappedRanges"* [ @G1, %entry ], [ %1, %for.inc10 ]
br label %for.body3
for.body3: ; preds = %for.inc, %for.cond1.preheader
%indvars.iv = phi i64 [ 0, %for.cond1.preheader ], [ %indvars.iv.next, %for.inc ]
%image4 = getelementptr inbounds %"struct.dyld::MappedRanges", %"struct.dyld::MappedRanges"* %p.019, i64 0, i32 0, i64 %indvars.iv, i32 0
%0 = load %class.ImageLoader*, %class.ImageLoader** %image4, align 8
%cmp5 = icmp eq %class.ImageLoader* %0, %image
br i1 %cmp5, label %if.then, label %for.inc
if.then: ; preds = %for.body3
tail call void @OSMemoryBarrier() optsize
store %class.ImageLoader* null, %class.ImageLoader** %image4, align 8
br label %for.inc
for.inc: ; preds = %if.then, %for.body3
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, 400
br i1 %exitcond, label %for.inc10, label %for.body3
for.inc10: ; preds = %for.inc
%next = getelementptr inbounds %"struct.dyld::MappedRanges", %"struct.dyld::MappedRanges"* %p.019, i64 0, i32 1
%1 = load %"struct.dyld::MappedRanges"*, %"struct.dyld::MappedRanges"** %next, align 8
%cmp = icmp eq %"struct.dyld::MappedRanges"* %1, null
br i1 %cmp, label %for.end11, label %for.cond1.preheader
for.end11: ; preds = %for.inc10
ret void
}