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| author | Matthias Braun <matze@braunis.de> | 2015-06-24 20:03:27 +0000 |
|---|---|---|
| committer | Matthias Braun <matze@braunis.de> | 2015-06-24 20:03:27 +0000 |
| commit | 7d46df36264e7f81f59135c7847fb8dce5642242 (patch) | |
| tree | 38e280db1679bdbee8462864e36475e04e580e5f /test | |
| parent | a3af347f38956c1bb7a539c3af131c41fc2d2d01 (diff) | |
ARMLoadStoreOptimizer: Fix errata 602117 handling and make testcase actually test for it
This fixes PR23912
Differential Revision: http://reviews.llvm.org/D10620
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240582 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/ARM/ldrd.ll | 29 | ||||
| -rw-r--r-- | test/CodeGen/Thumb2/float-ops.ll | 2 |
2 files changed, 16 insertions, 15 deletions
diff --git a/test/CodeGen/ARM/ldrd.ll b/test/CodeGen/ARM/ldrd.ll index a8070ea68aa..f3e13671ac3 100644 --- a/test/CodeGen/ARM/ldrd.ll +++ b/test/CodeGen/ARM/ldrd.ll @@ -6,23 +6,24 @@ ; Magic ARM pair hints works best with linearscan / fast. -; Cortex-M3 errata 602117: LDRD with base in list may result in incorrect base -; register when interrupted or faulted. - @b = external global i64* -define i64 @t(i64 %a) nounwind readonly { -entry: -; A8-LABEL: t: -; A8: ldrd r2, r3, [r2] - -; M3-LABEL: t: -; M3-NOT: ldrd +; We use the following two to force values into specific registers. +declare i64* @get_ptr() +declare void @use_i64(i64 %v) - %0 = load i64*, i64** @b, align 4 - %1 = load i64, i64* %0, align 4 - %2 = mul i64 %1, %a - ret i64 %2 +define void @test_ldrd(i64 %a) nounwind readonly { +; CHECK-LABEL: test_ldrd: +; CHECK: bl{{x?}} _get_ptr +; A8: ldrd r0, r1, [r0] +; Cortex-M3 errata 602117: LDRD with base in list may result in incorrect base +; register when interrupted or faulted. +; M3-NOT: ldrd r[[REGNUM:[0-9]+]], {{r[0-9]+}}, [r[[REGNUM]]] +; CHECK: bl{{x?}} _use_i64 + %ptr = call i64* @get_ptr() + %v = load i64, i64* %ptr, align 8 + call void @use_i64(i64 %v) + ret void } ; rdar://10435045 mixed LDRi8/LDRi12 diff --git a/test/CodeGen/Thumb2/float-ops.ll b/test/CodeGen/Thumb2/float-ops.ll index 4c42908ce13..c9f93f2d613 100644 --- a/test/CodeGen/Thumb2/float-ops.ll +++ b/test/CodeGen/Thumb2/float-ops.ll @@ -109,7 +109,7 @@ entry: define double @load_d(double* %a) { entry: ; CHECK-LABEL: load_d: -; NONE: ldrd r0, r1, [r0] +; NONE: ldm r0, {r0, r1} ; HARD: vldr d0, [r0] %0 = load double, double* %a, align 8 ret double %0 |