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5991145dd5
When push instructions are being used to pass function arguments on the stack, and either EH or debugging are enabled, we need to generate .cfi_adjust_cfa_offset directives appropriately. For (synch) EH, it is enough for the CFA offset to be correct at every call site, while for debugging we want to be correct after every push. Darwin does not support this well, so don't use pushes whenever it would be required. Differential Revision: http://reviews.llvm.org/D13767 llvm-svn: 251904
77 lines
2.1 KiB
LLVM
77 lines
2.1 KiB
LLVM
; RUN: llc < %s -mtriple=i686-windows | FileCheck %s -check-prefix=CHECK
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; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s -check-prefix=LINUX64
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declare void @param1(i32 %a)
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declare i32 @param2_ret(i32 %a, i32 %b)
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declare i64 @param2_ret64(i32 %a, i32 %b)
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declare void @param2(i32 %a, i32 %b)
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declare void @param3(i32 %a, i32 %b, i32 %c)
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declare void @param8(i64, i64, i64, i64, i64, i64, i64, i64)
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define void @test() minsize nounwind {
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; CHECK-LABEL: test:
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; CHECK: calll _param1
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; CHECK-NEXT: popl %eax
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; CHECK: calll _param2
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; CHECK-NEXT: popl %eax
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; CHECK-NEXT: popl %ecx
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; CHECK: calll _param2_ret
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; CHECK-NEXT: popl %ecx
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; CHECK-NEXT: popl %edx
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; CHECK-NEXT: pushl %eax
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; CHECK: calll _param3
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; CHECK-NEXT: addl $12, %esp
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; CHECK: calll _param2_ret64
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; CHECK-NEXT: popl %ecx
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; CHECK-NEXT: popl %ecx
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call void @param1(i32 1)
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call void @param2(i32 1, i32 2)
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%ret = call i32 @param2_ret(i32 1, i32 2)
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call void @param3(i32 1, i32 2, i32 %ret)
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%ret64 = call i64 @param2_ret64(i32 1, i32 2)
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ret void
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}
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define void @negative(i32 %k) {
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; CHECK-LABEL: negative:
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; CHECK: calll _param1
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; CHECK-NEXT: addl $4, %esp
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; CHECK: calll _param2
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; CHECK-NEXT: addl $8, %esp
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; CHECK: calll _param3
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; CHECK-NEXT: movl %ebp, %esp
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%v = alloca i32, i32 %k
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call void @param1(i32 1)
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call void @param2(i32 1, i32 2)
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call void @param3(i32 1, i32 2, i32 3)
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ret void
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}
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define void @spill(i32 inreg %a, i32 inreg %b, i32 inreg %c) minsize nounwind {
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; CHECK-LABEL: spill:
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; CHECK-DAG: movl %ecx,
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; CHECK-DAG: movl %edx,
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; CHECK: calll _param2_ret
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; CHECK-NEXT: popl %ecx
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; CHECK-NEXT: popl %edx
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; CHECK-DAG: movl {{.*}}, %ecx
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; CHECK-DAG: movl {{.*}}, %edx
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; CHECK: calll _spill
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%i = call i32 @param2_ret(i32 1, i32 2)
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call void @spill(i32 %a, i32 %b, i32 %c)
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ret void
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}
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define void @test_linux64(i32 %size) minsize nounwind {
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; LINUX64-LABEL: test_linux64:
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; LINUX64: pushq %rbp
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; LINUX64: callq param8
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; LINUX64-NEXT: popq %rax
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; LINUX64-NEXT: popq %rcx
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%a = alloca i64, i32 %size, align 8
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call void @param8(i64 1, i64 2, i64 3, i64 4, i64 5, i64 6, i64 7, i64 8)
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ret void
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}
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