aboutsummaryrefslogtreecommitdiff
path: root/test/CodeGen/X86/hhvm-cc.ll
diff options
context:
space:
mode:
Diffstat (limited to 'test/CodeGen/X86/hhvm-cc.ll')
-rw-r--r--test/CodeGen/X86/hhvm-cc.ll241
1 files changed, 241 insertions, 0 deletions
diff --git a/test/CodeGen/X86/hhvm-cc.ll b/test/CodeGen/X86/hhvm-cc.ll
new file mode 100644
index 0000000000000..3b729ed72f1cc
--- /dev/null
+++ b/test/CodeGen/X86/hhvm-cc.ll
@@ -0,0 +1,241 @@
+; RUN: llc < %s | FileCheck %s
+
+target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+declare hhvmcc i64 @bar(i64, i64, i64) nounwind
+
+; Simply check we can modify %rbx and %rbp before returning via call to bar.
+define hhvmcc i64 @foo(i64 %a, i64 %b, i64 %c) nounwind {
+entry:
+; CHECK-LABEL: foo:
+; CHECK-DAG: movl $1, %ebx
+; CHECK-DAG: movl $3, %ebp
+; CHECK: jmp bar
+ %ret = musttail call hhvmcc i64 @bar(i64 1, i64 %b, i64 3)
+ ret i64 %ret
+}
+
+; Check that we can read and modify %rbx returned from PHP function.
+define hhvmcc i64 @mod_return(i64 %a, i64 %b, i64 %c) nounwind {
+entry:
+; CHECK-LABEL: mod_return:
+; CHECK-NEXT: {{^#.*}}
+; CHECK-NEXT: callq bar
+; CHECK-NEXT: incq %rbx
+ %tmp = call hhvmcc i64 @bar(i64 %a, i64 %b, i64 %c)
+ %retval = add i64 %tmp, 1
+ ret i64 %retval
+}
+
+%rettype = type { i64, i64, i64, i64, i64, i64, i64,
+ i64, i64, i64, i64, i64, i64, i64
+}
+
+; Check that we can return up to 14 64-bit args in registers.
+define hhvmcc %rettype @return_all(i64 %a, i64 %b, i64 %c) nounwind {
+entry:
+; CHECK-LABEL: return_all:
+; CHECK-DAG: movl $1, %ebx
+; CHECK-DAG: movl $2, %ebp
+; CHECK-DAG: movl $3, %edi
+; CHECK-DAG: movl $4, %esi
+; CHECK-DAG: movl $5, %edx
+; CHECK-DAG: movl $6, %ecx
+; CHECK-DAG: movl $7, %r8
+; CHECK-DAG: movl $8, %r9
+; CHECK-DAG: movl $9, %eax
+; CHECK-DAG: movl $10, %r10
+; CHECK-DAG: movl $11, %r11
+; CHECK-DAG: movl $12, %r13
+; CHECK-DAG: movl $13, %r14
+; CHECK-DAG: movl $14, %r15
+; CHECK: retq
+ %r1 = insertvalue %rettype zeroinitializer, i64 1, 0
+ %r2 = insertvalue %rettype %r1, i64 2, 1
+ %r3 = insertvalue %rettype %r2, i64 3, 2
+ %r4 = insertvalue %rettype %r3, i64 4, 3
+ %r5 = insertvalue %rettype %r4, i64 5, 4
+ %r6 = insertvalue %rettype %r5, i64 6, 5
+ %r7 = insertvalue %rettype %r6, i64 7, 6
+ %r8 = insertvalue %rettype %r7, i64 8, 7
+ %r9 = insertvalue %rettype %r8, i64 9, 8
+ %r10 = insertvalue %rettype %r9, i64 10, 9
+ %r11 = insertvalue %rettype %r10, i64 11, 10
+ %r12 = insertvalue %rettype %r11, i64 12, 11
+ %r13 = insertvalue %rettype %r12, i64 13, 12
+ %r14 = insertvalue %rettype %r13, i64 14, 13
+ ret %rettype %r14
+}
+
+declare hhvmcc void @return_all_tc(i64, i64, i64, i64, i64, i64, i64, i64,
+ i64, i64, i64, i64, i64, i64, i64)
+
+; Check that we can return up to 14 64-bit args in registers via tail call.
+define hhvmcc void @test_return_all_tc(i64 %a, i64 %b, i64 %c) nounwind {
+entry:
+; CHECK-LABEL: test_return_all_tc:
+; CHECK-NEXT: {{^#.*}}
+; CHECK-DAG: movl $1, %ebx
+; CHECK-DAG: movl $3, %ebp
+; CHECK-DAG: movl $4, %r15
+; CHECK-DAG: movl $5, %edi
+; CHECK-DAG: movl $6, %esi
+; CHECK-DAG: movl $7, %edx
+; CHECK-DAG: movl $8, %ecx
+; CHECK-DAG: movl $9, %r8
+; CHECK-DAG: movl $10, %r9
+; CHECK-DAG: movl $11, %eax
+; CHECK-DAG: movl $12, %r10
+; CHECK-DAG: movl $13, %r11
+; CHECK-DAG: movl $14, %r13
+; CHECK-DAG: movl $15, %r14
+; CHECK: jmp return_all_tc
+ tail call hhvmcc void @return_all_tc(
+ i64 1, i64 %b, i64 3, i64 4, i64 5, i64 6, i64 7,
+ i64 8, i64 9, i64 10, i64 11, i64 12, i64 13, i64 14, i64 15)
+ ret void
+}
+
+declare hhvmcc {i64, i64} @php_short(i64, i64, i64, i64)
+
+define hhvmcc i64 @test_php_short(i64 %a, i64 %b, i64 %c) nounwind {
+entry:
+; CHECK-LABEL: test_php_short:
+; CHECK-NEXT: {{^#.*}}
+; CHECK-NEXT: movl $42, %r15
+; CHECK-NEXT: callq php_short
+; CHECK-NEXT: leaq (%rbp,%r12), %rbx
+; CHECK-NEXT: retq
+ %pair = call hhvmcc {i64, i64} @php_short(i64 %a, i64 %b, i64 %c, i64 42)
+ %fp = extractvalue {i64, i64} %pair, 1
+ %rv = add i64 %fp, %b
+ ret i64 %rv
+}
+
+declare hhvmcc %rettype @php_all(i64, i64, i64, i64, i64, i64, i64,
+ i64, i64, i64, i64, i64, i64, i64, i64)
+
+; Check that we can pass 15 arguments in registers.
+; Also check that %r12 (2nd arg) is not spilled.
+define hhvmcc i64 @test_php_all(i64 %a, i64 %b, i64 %c) nounwind {
+entry:
+; CHECK-LABEL: test_php_all:
+; CHECK-NEXT: {{^#.*}}
+; CHECK-NOT: sub
+; CHECK-NOT: sub
+; CHECK-DAG: movl $1, %ebx
+; CHECK-DAG: movl $3, %ebp
+; CHECK-DAG: movl $4, %r15
+; CHECK-DAG: movl $5, %edi
+; CHECK-DAG: movl $6, %esi
+; CHECK-DAG: movl $7, %edx
+; CHECK-DAG: movl $8, %ecx
+; CHECK-DAG: movl $9, %r8
+; CHECK-DAG: movl $10, %r9
+; CHECK-DAG: movl $11, %eax
+; CHECK-DAG: movl $12, %r10
+; CHECK-DAG: movl $13, %r11
+; CHECK-DAG: movl $14, %r13
+; CHECK-DAG: movl $15, %r14
+; CHECK: callq php_all
+ %pair = call hhvmcc %rettype @php_all(
+ i64 1, i64 %b, i64 3, i64 4, i64 5, i64 6, i64 7,
+ i64 8, i64 9, i64 10, i64 11, i64 12, i64 13, i64 14, i64 15)
+ %fp = extractvalue %rettype %pair, 1
+ %rv = add i64 %fp, %b
+ ret i64 %rv
+}
+
+declare hhvmcc void @svcreq(i64, i64, i64, i64, i64, i64, i64, i64, i64, i64,
+ i64, i64)
+
+define hhvmcc void @test_svcreq(i64 %a, i64 %b, i64 %c) nounwind {
+entry:
+; CHECK-LABEL: test_svcreq:
+; CHECK-DAG: movl $42, %r10
+; CHECK-DAG: movl $1, %edi
+; CHECK-DAG: movl $2, %esi
+; CHECK-DAG: movl $3, %edx
+; CHECK-DAG: movl $4, %ecx
+; CHECK-DAG: movl $5, %r8
+; CHECK-DAG: movl $6, %r9
+; CHECK: jmp svcreq
+ tail call hhvmcc void @svcreq(i64 %a, i64 %b, i64 %c, i64 undef, i64 1,
+ i64 2, i64 3, i64 4, i64 5, i64 6, i64 undef,
+ i64 42)
+ ret void
+}
+
+declare hhvm_ccc void @helper_short(i64, i64, i64, i64, i64, i64, i64)
+
+; Pass all arguments in registers and check that we don't adjust stack
+; for the call.
+define hhvmcc void @test_helper_short(i64 %a, i64 %b, i64 %c) nounwind {
+entry:
+; CHECK-LABEL: test_helper_short:
+; CHECK-NOT: push
+; CHECK-NOT: sub
+; CHECK-DAG: movl $1, %edi
+; CHECK-DAG: movl $2, %esi
+; CHECK-DAG: movl $3, %edx
+; CHECK-DAG: movl $4, %ecx
+; CHECK-DAG: movl $5, %r8
+; CHECK-DAG: movl $6, %r9
+; CHECK: callq helper_short
+ call hhvm_ccc void @helper_short(i64 %c, i64 1, i64 2, i64 3, i64 4,
+ i64 5, i64 6)
+ ret void
+}
+
+declare hhvm_ccc void @helper(i64, i64, i64, i64, i64, i64, i64, i64, i64, i64)
+
+define hhvmcc void @test_helper(i64 %a, i64 %b, i64 %c) nounwind {
+entry:
+; CHECK-LABEL: test_helper:
+; CHECK-DAG: movl $1, %edi
+; CHECK-DAG: movl $2, %esi
+; CHECK-DAG: movl $3, %edx
+; CHECK-DAG: movl $4, %ecx
+; CHECK-DAG: movl $5, %r8
+; CHECK-DAG: movl $6, %r9
+; CHECK: callq helper
+ call hhvm_ccc void @helper(i64 %c, i64 1, i64 2, i64 3, i64 4, i64 5, i64 6,
+ i64 7, i64 8, i64 9)
+ ret void
+}
+
+; When we enter function with HHVM calling convention, the stack is aligned
+; at 16 bytes. This means we align objects on the stack differently and
+; adjust the stack differently for calls.
+declare hhvm_ccc void @stack_helper(i64, i64, i64)
+declare hhvm_ccc void @stack_helper2(<2 x double>, i64)
+
+define hhvmcc void @test_stack_helper(i64 %a, i64 %b, i64 %c) nounwind {
+entry:
+; CHECK-LABEL: test_stack_helper:
+; CHECK-NOT: push
+; CHECK: subq $32, %rsp
+; CHECK: movaps 16(%rsp), %xmm0
+; CHECK: callq stack_helper2
+ %t1 = alloca <2 x double>, align 16
+ %t2 = alloca i64, align 8
+ %t3 = alloca i64, align 8
+ %load3 = load i64, i64 *%t3
+ call hhvm_ccc void @stack_helper(i64 %c, i64 %load3, i64 42)
+ %load = load <2 x double>, <2 x double> *%t1
+ %load2 = load i64, i64 *%t2
+ call hhvm_ccc void @stack_helper2(<2 x double> %load, i64 %load2)
+ ret void
+}
+
+; Check that we are not adjusting the stack before calling the helper.
+define hhvmcc void @test_stack_helper2(i64 %a, i64 %b, i64 %c) nounwind {
+entry:
+; CHECK-LABEL: test_stack_helper2:
+; CHECK-NOT: push
+; CHECK-NOT: subq
+ call hhvm_ccc void @stack_helper(i64 %c, i64 7, i64 42)
+ ret void
+}
+
generated by cgit v1.3 (git 2.53.0) at 2026-09-07 19:18:56 +0000