[llvm] r250936 - [WinEH] Add test for llvm.va.start in catchpad
Reid Kleckner via llvm-commits
llvm-commits at lists.llvm.org
Wed Oct 21 12:54:40 PDT 2015
Author: rnk
Date: Wed Oct 21 14:54:40 2015
New Revision: 250936
URL: http://llvm.org/viewvc/llvm-project?rev=250936&view=rev
Log:
[WinEH] Add test for llvm.va.start in catchpad
It already works, but we should have a test for it.
This used to be PR23094 in the old model.
Added:
llvm/trunk/test/CodeGen/X86/win-catchpad-varargs.ll
Added: llvm/trunk/test/CodeGen/X86/win-catchpad-varargs.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/win-catchpad-varargs.ll?rev=250936&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/X86/win-catchpad-varargs.ll (added)
+++ llvm/trunk/test/CodeGen/X86/win-catchpad-varargs.ll Wed Oct 21 14:54:40 2015
@@ -0,0 +1,103 @@
+; RUN: llc -mtriple=x86_64-windows-msvc < %s | FileCheck %s --check-prefix=X64
+; RUN: llc -mtriple=i686-windows-msvc < %s | FileCheck %s --check-prefix=X86
+
+declare void @llvm.va_start(i8*)
+declare void @llvm.va_end(i8*)
+declare i32 @__CxxFrameHandler3(...)
+declare void @g()
+
+define i32 @f(i32 %a, ...) personality i32 (...)* @__CxxFrameHandler3 {
+entry:
+ %ap = alloca i8*
+ invoke void @g()
+ to label %return unwind label %catch.dispatch
+
+catch.dispatch: ; preds = %entry
+ %0 = catchpad [i8* null, i32 64, i8* null]
+ to label %catch unwind label %catchendblock
+
+catch: ; preds = %catch.dispatch
+ %ap1 = bitcast i8** %ap to i8*
+ call void @llvm.va_start(i8* %ap1)
+ %argp.cur = load i8*, i8** %ap
+ %1 = bitcast i8* %argp.cur to i32*
+ %arg2 = load i32, i32* %1
+ call void @llvm.va_end(i8* %ap1)
+ catchret %0 to label %return
+
+catchendblock: ; preds = %catch.dispatch
+ catchendpad unwind to caller
+
+return: ; preds = %entry, %catch
+ %retval.0 = phi i32 [ %arg2, %catch ], [ -1, %entry ]
+ ret i32 %retval.0
+}
+
+; X64-LABEL: .seh_proc f
+; X64: pushq %rbp
+; X64: pushq %rsi
+; X64: subq $56, %rsp
+; X64: leaq 48(%rsp), %rbp
+; X64: callq g
+; X64: movl %esi, %eax
+; X64: addq $56, %rsp
+; X64: popq %rsi
+; X64: popq %rbp
+
+; X64: movl 4(%rbp), %esi
+; X64: jmp
+
+; X64-LABEL: "?catch$1@?0?f at 4HA":
+; X64: .seh_proc "?catch$1@?0?f at 4HA"
+; X64: movq %rdx, 16(%rsp)
+; X64: pushq %rbp
+; X64: pushq %rsi
+; X64: subq $40, %rsp
+; X64: leaq 48(%rdx), %rbp
+; arg2 is at RBP+40:
+; start at arg2
+; + 8 for arg1
+; + 8 for retaddr
+; + 8 for RBP
+; + 8 for RSI
+; + 56 for stackalloc
+; - 48 for setframe
+; = 40
+; X64: movl 40(%rbp), %eax
+; X64: movl %eax, 4(%rbp)
+; X64: leaq .LBB0_2(%rip), %rax
+; X64: addq $40, %rsp
+; X64: popq %rsi
+; X64: popq %rbp
+; X64: retq # CATCHRET
+
+; X86-LABEL: _f: # @f
+; X86: pushl %ebp
+; X86: movl %esp, %ebp
+; X86: pushl %ebx
+; X86: pushl %edi
+; X86: pushl %esi
+; X86: subl $28, %esp
+; X86: movl $-1, -40(%ebp)
+; X86: calll _g
+; X86: movl -40(%ebp), %eax
+; X86: addl $28, %esp
+; X86: popl %esi
+; X86: popl %edi
+; X86: popl %ebx
+; X86: popl %ebp
+; X86: retl
+
+; X86-LABEL: "?catch$1@?0?f at 4HA":
+; X86: pushl %ebp
+; X86: addl $12, %ebp
+; arg2 is at EBP offset 12:
+; + 4 for arg1
+; + 4 for retaddr
+; + 4 for EBP
+; Done due to mov %esp, %ebp
+; X86: movl 12(%ebp), %eax
+; X86: movl %eax, -32(%ebp)
+; X86: movl $LBB0_2, %eax
+; X86: popl %ebp
+; X86: retl # CATCHRET
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