Imported Upstream version 5.18.0.205

Former-commit-id: 7f59f7e792705db773f1caecdaa823092f4e2927

external/llvm/test/CodeGen/X86/pop-stack-cleanup.ll

@@ -0,0 +1,87 @@
+; RUN: llc < %s -mtriple=i686-windows | FileCheck %s
+; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s -check-prefix=LINUX64
+
+declare void @param1(i32 %a)
+declare i32 @param2_ret(i32 %a, i32 %b)
+declare i64 @param2_ret64(i32 %a, i32 %b)
+declare void @param2(i32 %a, i32 %b)
+declare void @param3(i32 %a, i32 %b, i32 %c)
+declare void @param8(i64, i64, i64, i64, i64, i64, i64, i64)
+declare i32 @param8_ret(i64, i64, i64, i64, i64, i64, i64, i64)
+
+
+define void @test() minsize nounwind {
+; CHECK-LABEL: test:
+; CHECK: calll _param1
+; CHECK-NEXT: popl %eax
+; CHECK: calll _param2
+; CHECK-NEXT: popl %eax
+; CHECK-NEXT: popl %ecx
+; CHECK: calll _param2_ret
+; CHECK-NEXT: popl %ecx
+; CHECK-NEXT: popl %edx
+; CHECK-NEXT: pushl %eax
+; CHECK: calll _param3
+; CHECK-NEXT: addl $12, %esp
+; CHECK: calll _param2_ret64
+; CHECK-NEXT: popl %ecx
+; CHECK-NEXT: popl %ecx
+  call void @param1(i32 1)
+  call void @param2(i32 1, i32 2)
+  %ret = call i32 @param2_ret(i32 1, i32 2)
+  call void @param3(i32 1, i32 2, i32 %ret)
+  %ret64 = call i64 @param2_ret64(i32 1, i32 2)  
+  ret void
+}
+
+define void @negative(i32 %k) {
+; CHECK-LABEL: negative:
+; CHECK: calll _param1
+; CHECK-NEXT: addl $4, %esp
+; CHECK: calll _param2
+; CHECK-NEXT: addl $8, %esp
+; CHECK: calll _param3
+; CHECK-NEXT: movl %ebp, %esp
+  %v = alloca i32, i32 %k
+  call void @param1(i32 1)
+  call void @param2(i32 1, i32 2)
+  call void @param3(i32 1, i32 2, i32 3)
+  ret void
+}
+
+define void @spill(i32 inreg %a, i32 inreg %b, i32 inreg %c) minsize nounwind {
+; CHECK-LABEL: spill:
+; CHECK-DAG: movl %ecx,
+; CHECK-DAG: movl %edx,
+; CHECK: calll _param2_ret
+; CHECK-NEXT: popl %ecx
+; CHECK-NEXT: popl %edx
+; CHECK-DAG: movl {{.*}}, %ecx
+; CHECK-DAG: movl {{.*}}, %edx
+; CHECK: calll _spill
+  %i = call i32 @param2_ret(i32 1, i32 2)
+  call void @spill(i32 %a, i32 %b, i32 %c)
+  ret void
+}
+
+define void @test_linux64(i32 %size) minsize nounwind {
+; LINUX64-LABEL: test_linux64:
+; LINUX64: pushq %rbp
+; LINUX64: callq param8
+; LINUX64-NEXT: popq %rax
+; LINUX64-NEXT: popq %rcx
+
+  %a = alloca i64, i32 %size, align 8
+  call void @param8(i64 1, i64 2, i64 3, i64 4, i64 5, i64 6, i64 7, i64 8)
+  ret void
+}
+
+define i32 @test_linux64_i32(i32 %size) minsize nounwind {
+; LINUX64-LABEL: test_linux64_i32:
+; LINUX64: callq param8_ret
+; LINUX64-NOT: popq %rax
+; LINUX64: retq
+  %a = alloca i64, i32 %size, align 8
+  %r = call i32 @param8_ret(i64 1, i64 2, i64 3, i64 4, i64 5, i64 6, i64 7, i64 8)
+  ret i32 %r
+}