[llvm] 49e34e2 - [ARM] Test to show incorrect pointer info. NFC
David Green via llvm-commits
llvm-commits at lists.llvm.org
Sat Oct 3 04:25:58 PDT 2020
Author: David Green
Date: 2020-10-03T12:25:34+01:00
New Revision: 49e34e239b3632bd26d6c2ac648915bfed5b05fc
URL: https://github.com/llvm/llvm-project/commit/49e34e239b3632bd26d6c2ac648915bfed5b05fc
DIFF: https://github.com/llvm/llvm-project/commit/49e34e239b3632bd26d6c2ac648915bfed5b05fc.diff
LOG: [ARM] Test to show incorrect pointer info. NFC
Added:
llvm/test/CodeGen/Thumb2/vmovdrroffset.ll
Modified:
Removed:
################################################################################
diff --git a/llvm/test/CodeGen/Thumb2/vmovdrroffset.ll b/llvm/test/CodeGen/Thumb2/vmovdrroffset.ll
new file mode 100644
index 000000000000..07656e60a568
--- /dev/null
+++ b/llvm/test/CodeGen/Thumb2/vmovdrroffset.ll
@@ -0,0 +1,51 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=thumbv8.1m.main-none-none-eabi -mattr=+mve %s -o - | FileCheck %s
+
+; This test was getting the offset of a store's pointer info incorrect, leading to the
+; incorrect aliasing info an the store moving past a dependant load.
+
+define arm_aapcs_vfpcc double @zero(double %a, double %b, double %c) {
+; CHECK-LABEL: zero:
+; CHECK: @ %bb.0: @ %entry
+; CHECK-NEXT: .save {r4, lr}
+; CHECK-NEXT: push {r4, lr}
+; CHECK-NEXT: .vsave {d8, d9}
+; CHECK-NEXT: vpush {d8, d9}
+; CHECK-NEXT: .pad #8
+; CHECK-NEXT: sub sp, #8
+; CHECK-NEXT: vmov.f32 s16, s2
+; CHECK-NEXT: vmov.f32 s18, s0
+; CHECK-NEXT: vmov.f32 s17, s3
+; CHECK-NEXT: vmov.f32 s19, s1
+; CHECK-NEXT: bl sqrt
+; CHECK-NEXT: vmov r2, r3, d8
+; CHECK-NEXT: vmov r0, r1, d0
+; CHECK-NEXT: bl __aeabi_dadd
+; CHECK-NEXT: mov r4, r0
+; CHECK-NEXT: ldrb.w r0, [sp, #7]
+; CHECK-NEXT: str r1, [sp, #4]
+; CHECK-NEXT: eor r0, r0, #128
+; CHECK-NEXT: strb.w r0, [sp, #7]
+; CHECK-NEXT: vmov r0, r1, d9
+; CHECK-NEXT: mov r2, r0
+; CHECK-NEXT: mov r3, r1
+; CHECK-NEXT: bl __aeabi_dadd
+; CHECK-NEXT: mov r3, r1
+; CHECK-NEXT: ldr r1, [sp, #4]
+; CHECK-NEXT: mov r2, r0
+; CHECK-NEXT: mov r0, r4
+; CHECK-NEXT: bl __aeabi_ddiv
+; CHECK-NEXT: vmov d0, r0, r1
+; CHECK-NEXT: add sp, #8
+; CHECK-NEXT: vpop {d8, d9}
+; CHECK-NEXT: pop {r4, pc}
+entry:
+ %call = tail call nnan nsz arm_aapcs_vfpcc double @sqrt(double %a)
+ %0 = fadd nnan nsz double %call, %b
+ %sub3 = fneg nnan nsz double %0
+ %mul4 = fmul nnan nsz double %a, 2.000000e+00
+ %div = fdiv nnan nsz double %sub3, %mul4
+ ret double %div
+}
+
+declare arm_aapcs_vfpcc double @sqrt(double)
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