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-rw-r--r--test/CodeGen/AArch64/alloca.ll121
1 files changed, 67 insertions, 54 deletions
diff --git a/test/CodeGen/AArch64/alloca.ll b/test/CodeGen/AArch64/alloca.ll
index 1d3c0a0..f93efbc 100644
--- a/test/CodeGen/AArch64/alloca.ll
+++ b/test/CodeGen/AArch64/alloca.ll
@@ -1,5 +1,5 @@
-; RUN: llc -mtriple=aarch64-none-linux-gnu -verify-machineinstrs < %s | FileCheck %s
-; RUN: llc -mtriple=aarch64-none-linux-gnu -mattr=-fp-armv8 -verify-machineinstrs < %s | FileCheck --check-prefix=CHECK-NOFP %s
+; RUN: llc -mtriple=aarch64-linux-gnu -verify-machineinstrs -o - %s | FileCheck %s --check-prefix=CHECK
+; RUN: llc -mtriple=aarch64-none-linux-gnu -mattr=-fp-armv8 -verify-machineinstrs < %s | FileCheck --check-prefix=CHECK-NOFP-ARM64 %s
declare void @use_addr(i8*)
@@ -8,23 +8,22 @@ define void @test_simple_alloca(i64 %n) {
%buf = alloca i8, i64 %n
; Make sure we align the stack change to 16 bytes:
-; CHECK-DAG: add [[SPDELTA:x[0-9]+]], x0, #15
-; CHECK-DAG: and x0, [[SPDELTA]], #0xfffffffffffffff0
+; CHECK: {{mov|add}} x29
+; CHECK: mov [[TMP:x[0-9]+]], sp
+; CHECK: add [[SPDELTA_TMP:x[0-9]+]], x0, #15
+; CHECK: and [[SPDELTA:x[0-9]+]], [[SPDELTA_TMP]], #0xfffffffffffffff0
; Make sure we change SP. It would be surprising if anything but x0 were used
; for the final sp, but it could be if it was then moved into x0.
-; CHECK-DAG: mov [[TMP:x[0-9]+]], sp
-; CHECK-DAG: sub x0, [[TMP]], [[SPDELTA]]
-; CHECK: mov sp, x0
+; CHECK: sub [[NEWSP:x[0-9]+]], [[TMP]], [[SPDELTA]]
+; CHECK: mov sp, [[NEWSP]]
call void @use_addr(i8* %buf)
; CHECK: bl use_addr
ret void
; Make sure epilogue restores sp from fp
-; CHECK: sub sp, x29, #16
-; CHECK: ldp x29, x30, [sp, #16]
-; CHECK: add sp, sp, #32
+; CHECK: {{sub|mov}} sp, x29
; CHECK: ret
}
@@ -32,57 +31,70 @@ declare void @use_addr_loc(i8*, i64*)
define i64 @test_alloca_with_local(i64 %n) {
; CHECK-LABEL: test_alloca_with_local:
-; CHECK: sub sp, sp, #32
-; CHECK: stp x29, x30, [sp, #16]
+; CHECK-DAG: sub sp, sp, [[LOCAL_STACK:#[0-9]+]]
+; CHECK-DAG: {{mov|add}} x29, sp
%loc = alloca i64
%buf = alloca i8, i64 %n
; Make sure we align the stack change to 16 bytes:
-; CHECK-DAG: add [[SPDELTA:x[0-9]+]], x0, #15
-; CHECK-DAG: and x0, [[SPDELTA]], #0xfffffffffffffff0
+; CHECK: mov [[TMP:x[0-9]+]], sp
+; CHECK: add [[SPDELTA_TMP:x[0-9]+]], x0, #15
+; CHECK: and [[SPDELTA:x[0-9]+]], [[SPDELTA_TMP]], #0xfffffffffffffff0
; Make sure we change SP. It would be surprising if anything but x0 were used
; for the final sp, but it could be if it was then moved into x0.
-; CHECK-DAG: mov [[TMP:x[0-9]+]], sp
-; CHECK-DAG: sub x0, [[TMP]], [[SPDELTA]]
-; CHECK: mov sp, x0
+; CHECK: sub [[NEWSP:x[0-9]+]], [[TMP]], [[SPDELTA]]
+; CHECK: mov sp, [[NEWSP]]
- ; Obviously suboptimal code here, but it to get &local in x1
-; CHECK: sub [[TMP:x[0-9]+]], x29, [[LOC_FROM_FP:#[0-9]+]]
-; CHECK: add x1, [[TMP]], #0
+; CHECK: sub {{x[0-9]+}}, x29, #[[LOC_FROM_FP:[0-9]+]]
call void @use_addr_loc(i8* %buf, i64* %loc)
; CHECK: bl use_addr
%val = load i64* %loc
-; CHECK: sub x[[TMP:[0-9]+]], x29, [[LOC_FROM_FP]]
-; CHECK: ldr x0, [x[[TMP]]]
+
+; CHECK: ldur x0, [x29, #-[[LOC_FROM_FP]]]
ret i64 %val
; Make sure epilogue restores sp from fp
-; CHECK: sub sp, x29, #16
-; CHECK: ldp x29, x30, [sp, #16]
-; CHECK: add sp, sp, #32
+; CHECK: {{sub|mov}} sp, x29
; CHECK: ret
}
define void @test_variadic_alloca(i64 %n, ...) {
-; CHECK: test_variadic_alloca:
-
-; CHECK: sub sp, sp, #208
-; CHECK: stp x29, x30, [sp, #192]
-; CHECK: add x29, sp, #192
-; CHECK: sub [[TMP:x[0-9]+]], x29, #192
-; CHECK: add x8, [[TMP]], #0
-; CHECK-FP: str q7, [x8, #112]
+; CHECK-LABEL: test_variadic_alloca:
+
; [...]
-; CHECK-FP: str q1, [x8, #16]
-; CHECK-NOFP: sub sp, sp, #80
-; CHECK-NOFP: stp x29, x30, [sp, #64]
-; CHECK-NOFP: add x29, sp, #64
-; CHECK-NOFP: sub [[TMP:x[0-9]+]], x29, #64
-; CHECK-NOFP: add x8, [[TMP]], #0
+
+; CHECK-NOFP-AARCH64: sub sp, sp, #80
+; CHECK-NOFP-AARCH64: stp x29, x30, [sp, #64]
+; CHECK-NOFP-AARCH64: add x29, sp, #64
+; CHECK-NOFP-AARCH64: sub [[TMP:x[0-9]+]], x29, #64
+; CHECK-NOFP-AARCH64: add x8, [[TMP]], #0
+
+
+; CHECK: stp x29, x30, [sp, #-16]!
+; CHECK: mov x29, sp
+; CHECK: sub sp, sp, #192
+; CHECK: stp q6, q7, [x29, #-96]
+; [...]
+; CHECK: stp q0, q1, [x29, #-192]
+
+; CHECK: stp x6, x7, [x29, #-16]
+; [...]
+; CHECK: stp x2, x3, [x29, #-48]
+
+; CHECK-NOFP-ARM64: stp x29, x30, [sp, #-16]!
+; CHECK-NOFP-ARM64: mov x29, sp
+; CHECK-NOFP-ARM64: sub sp, sp, #64
+; CHECK-NOFP-ARM64: stp x6, x7, [x29, #-16]
+; [...]
+; CHECK-NOFP-ARM64: stp x4, x5, [x29, #-32]
+; [...]
+; CHECK-NOFP-ARM64: stp x2, x3, [x29, #-48]
+; [...]
+; CHECK-NOFP-ARM64: mov x8, sp
%addr = alloca i8, i64 %n
@@ -90,23 +102,24 @@ define void @test_variadic_alloca(i64 %n, ...) {
; CHECK: bl use_addr
ret void
-; CHECK: sub sp, x29, #192
-; CHECK: ldp x29, x30, [sp, #192]
-; CHECK: add sp, sp, #208
-; CHECK-NOFP: sub sp, x29, #64
-; CHECK-NOFP: ldp x29, x30, [sp, #64]
-; CHECK-NOFP: add sp, sp, #80
+; CHECK-NOFP-AARCH64: sub sp, x29, #64
+; CHECK-NOFP-AARCH64: ldp x29, x30, [sp, #64]
+; CHECK-NOFP-AARCH64: add sp, sp, #80
+
+; CHECK-NOFP-ARM64: mov sp, x29
+; CHECK-NOFP-ARM64: ldp x29, x30, [sp], #16
}
define void @test_alloca_large_frame(i64 %n) {
; CHECK-LABEL: test_alloca_large_frame:
-; CHECK: sub sp, sp, #496
-; CHECK: stp x29, x30, [sp, #480]
-; CHECK: add x29, sp, #480
-; CHECK: sub sp, sp, #48
-; CHECK: sub sp, sp, #1953, lsl #12
+
+; CHECK: stp x20, x19, [sp, #-32]!
+; CHECK: stp x29, x30, [sp, #16]
+; CHECK: add x29, sp, #16
+; CHECK: sub sp, sp, #1953, lsl #12
+; CHECK: sub sp, sp, #512
%addr1 = alloca i8, i64 %n
%addr2 = alloca i64, i64 1000000
@@ -114,9 +127,10 @@ define void @test_alloca_large_frame(i64 %n) {
call void @use_addr_loc(i8* %addr1, i64* %addr2)
ret void
-; CHECK: sub sp, x29, #480
-; CHECK: ldp x29, x30, [sp, #480]
-; CHECK: add sp, sp, #496
+
+; CHECK: sub sp, x29, #16
+; CHECK: ldp x29, x30, [sp, #16]
+; CHECK: ldp x20, x19, [sp], #32
}
declare i8* @llvm.stacksave()
@@ -124,7 +138,6 @@ declare void @llvm.stackrestore(i8*)
define void @test_scoped_alloca(i64 %n) {
; CHECK-LABEL: test_scoped_alloca:
-; CHECK: sub sp, sp, #32
%sp = call i8* @llvm.stacksave()
; CHECK: mov [[SAVED_SP:x[0-9]+]], sp
generated by cgit v1.1 at 2024-05-30 19:46:19 +0000