; This test is attempting to detect when we request forced re-alignment of the ; stack to an alignment greater than would be available due to the ABI. We ; arbitrarily force alignment up to 32-bytes for i386 hoping that this will ; exceed any ABI provisions. ; ; RUN: llc < %s -mcpu=generic -stackrealign -stack-alignment=32 | FileCheck %s target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32-n8:16:32-S128" target triple = "i386-unknown-linux-gnu" define i32 @f(i8* %p) nounwind { entry: %0 = load i8, i8* %p %conv = sext i8 %0 to i32 ret i32 %conv } define i64 @g(i32 %i) nounwind { ; CHECK-LABEL: g: ; CHECK: pushl %ebp ; CHECK-NEXT: movl %esp, %ebp ; CHECK-NEXT: pushl ; CHECK-NEXT: pushl ; CHECK-NEXT: andl $-32, %esp ; CHECK-NEXT: subl $32, %esp ; ; Now setup the base pointer (%esi). ; CHECK-NEXT: movl %esp, %esi ; CHECK-NOT: {{[^ ,]*}}, %esp ; ; The next adjustment of the stack is due to the alloca. ; CHECK: movl %{{...}}, %esp ; CHECK-NOT: {{[^ ,]*}}, %esp ; ; Next we set up the memset call, and then undo it. ; CHECK: subl $20, %esp ; CHECK-NOT: {{[^ ,]*}}, %esp ; CHECK: calll memset ; CHECK-NEXT: addl $32, %esp ; CHECK-NOT: {{[^ ,]*}}, %esp ; ; Next we set up the call to 'f'. ; CHECK: subl $28, %esp ; CHECK-NOT: {{[^ ,]*}}, %esp ; CHECK: calll f ; CHECK-NEXT: addl $32, %esp ; CHECK-NOT: {{[^ ,]*}}, %esp ; ; Restore %esp from %ebp (frame pointer) and subtract the size of ; zone with callee-saved registers to pop them. ; This is the state prior to stack realignment and the allocation of VLAs. ; CHECK-NOT: popl ; CHECK: leal -8(%ebp), %esp ; CHECK-NEXT: popl ; CHECK-NEXT: popl ; CHECK-NEXT: popl %ebp ; CHECK-NEXT: ret entry: br label %if.then if.then: %0 = alloca i8, i32 %i call void @llvm.memset.p0i8.i32(i8* %0, i8 0, i32 %i, i32 1, i1 false) %call = call i32 @f(i8* %0) %conv = sext i32 %call to i64 ret i64 %conv } declare void @llvm.memset.p0i8.i32(i8*, i8, i32, i32, i1) nounwind