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b7b3e8e261
Record internal state based on register units. This is often more efficient as there are typically fewer register units to update compared to iterating over all the aliases of a register. Original patch by Matthias Braun, but I've been rebasing and fixing it for almost 2 years and fixed a few bugs causing intermediate failures to make this patch independent of the changes in https://reviews.llvm.org/D52010.
88 lines
3.8 KiB
LLVM
88 lines
3.8 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=i386-apple-darwin -O0 -regalloc=fast | FileCheck %s
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; rdar://6787136
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%struct.X = type { i8, [32 x i8] }
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@llvm.used = appending global [1 x i8*] [i8* bitcast (i32 ()* @z to i8*)], section "llvm.metadata" ; <[1 x i8*]*> [#uses=0]
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define i32 @z() nounwind ssp {
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; CHECK-LABEL: z:
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; CHECK: ## %bb.0: ## %entry
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; CHECK-NEXT: pushl %edi
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; CHECK-NEXT: pushl %esi
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; CHECK-NEXT: subl $148, %esp
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; CHECK-NEXT: movl L___stack_chk_guard$non_lazy_ptr, %eax
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; CHECK-NEXT: movl (%eax), %eax
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; CHECK-NEXT: movl %eax, {{[0-9]+}}(%esp)
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; CHECK-NEXT: movb $48, {{[0-9]+}}(%esp)
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; CHECK-NEXT: movb {{[0-9]+}}(%esp), %al
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; CHECK-NEXT: movb %al, {{[0-9]+}}(%esp)
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; CHECK-NEXT: movb $15, {{[0-9]+}}(%esp)
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; CHECK-NEXT: movl %esp, %eax
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; CHECK-NEXT: movl $8, %ecx
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; CHECK-NEXT: leal {{[0-9]+}}(%esp), %edx
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; CHECK-NEXT: movl %ecx, {{[-0-9]+}}(%e{{[sb]}}p) ## 4-byte Spill
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; CHECK-NEXT: movl %eax, %edi
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; CHECK-NEXT: movl %edx, %esi
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; CHECK-NEXT: rep;movsl (%esi), %es:(%edi)
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; CHECK-NEXT: movl %eax, %ecx
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; CHECK-NEXT: addl $36, %ecx
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; CHECK-NEXT: movl {{[-0-9]+}}(%e{{[sb]}}p), %esi ## 4-byte Reload
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; CHECK-NEXT: movl %ecx, {{[-0-9]+}}(%e{{[sb]}}p) ## 4-byte Spill
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; CHECK-NEXT: movl %esi, %ecx
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; CHECK-NEXT: movl {{[-0-9]+}}(%e{{[sb]}}p), %edi ## 4-byte Reload
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; CHECK-NEXT: movl %edx, %esi
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; CHECK-NEXT: rep;movsl (%esi), %es:(%edi)
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; CHECK-NEXT: movb {{[0-9]+}}(%esp), %cl
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; CHECK-NEXT: movb %cl, 32(%eax)
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; CHECK-NEXT: movb %cl, 68(%eax)
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; CHECK-NEXT: calll _f
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; CHECK-NEXT: movl %eax, {{[0-9]+}}(%esp)
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; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
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; CHECK-NEXT: movl %eax, {{[0-9]+}}(%esp)
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; CHECK-NEXT: ## %bb.1: ## %return
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; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
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; CHECK-NEXT: movl L___stack_chk_guard$non_lazy_ptr, %ecx
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; CHECK-NEXT: movl (%ecx), %ecx
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; CHECK-NEXT: movl {{[0-9]+}}(%esp), %edx
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; CHECK-NEXT: cmpl %edx, %ecx
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; CHECK-NEXT: movl %eax, {{[-0-9]+}}(%e{{[sb]}}p) ## 4-byte Spill
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; CHECK-NEXT: jne LBB0_3
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; CHECK-NEXT: ## %bb.2: ## %SP_return
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; CHECK-NEXT: movl {{[-0-9]+}}(%e{{[sb]}}p), %eax ## 4-byte Reload
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; CHECK-NEXT: addl $148, %esp
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; CHECK-NEXT: popl %esi
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; CHECK-NEXT: popl %edi
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; CHECK-NEXT: retl
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; CHECK-NEXT: LBB0_3: ## %CallStackCheckFailBlk
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; CHECK-NEXT: calll ___stack_chk_fail
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; CHECK-NEXT: ud2
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entry:
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%retval = alloca i32 ; <i32*> [#uses=2]
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%xxx = alloca %struct.X ; <%struct.X*> [#uses=6]
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%0 = alloca i32 ; <i32*> [#uses=2]
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%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
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%1 = getelementptr %struct.X, %struct.X* %xxx, i32 0, i32 1 ; <[32 x i8]*> [#uses=1]
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%2 = getelementptr [32 x i8], [32 x i8]* %1, i32 0, i32 31 ; <i8*> [#uses=1]
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store i8 48, i8* %2, align 1
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%3 = getelementptr %struct.X, %struct.X* %xxx, i32 0, i32 1 ; <[32 x i8]*> [#uses=1]
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%4 = getelementptr [32 x i8], [32 x i8]* %3, i32 0, i32 31 ; <i8*> [#uses=1]
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%5 = load i8, i8* %4, align 1 ; <i8> [#uses=1]
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%6 = getelementptr %struct.X, %struct.X* %xxx, i32 0, i32 1 ; <[32 x i8]*> [#uses=1]
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%7 = getelementptr [32 x i8], [32 x i8]* %6, i32 0, i32 0 ; <i8*> [#uses=1]
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store i8 %5, i8* %7, align 1
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%8 = getelementptr %struct.X, %struct.X* %xxx, i32 0, i32 0 ; <i8*> [#uses=1]
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store i8 15, i8* %8, align 1
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%9 = call i32 (...) bitcast (i32 (%struct.X*, %struct.X*)* @f to i32 (...)*)(%struct.X* byval align 4 %xxx, %struct.X* byval align 4 %xxx) nounwind ; <i32> [#uses=1]
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store i32 %9, i32* %0, align 4
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%10 = load i32, i32* %0, align 4 ; <i32> [#uses=1]
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store i32 %10, i32* %retval, align 4
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br label %return
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return: ; preds = %entry
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%retval1 = load i32, i32* %retval ; <i32> [#uses=1]
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ret i32 %retval1
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}
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declare i32 @f(%struct.X* byval align 4, %struct.X* byval align 4) nounwind ssp
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