From 79944ce3dad5d138e561e39af2103c17b79a90f0 Mon Sep 17 00:00:00 2001 From: Tom Stellard Date: Wed, 9 Apr 2014 15:24:19 +0000 Subject: Merging r201841: ------------------------------------------------------------------------ r201841 | Kevin.Qin | 2014-02-21 02:45:48 -0500 (Fri, 21 Feb 2014) | 2 lines [AArch64] Add register constraints to avoid generating STLXR and STXR with unpredictable behavior. ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_34@205903 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/AArch64/AArch64InstrInfo.td | 1 + test/CodeGen/AArch64/atomic-ops.ll | 81 ++++++++++++++++++++++++++++++++++ 2 files changed, 82 insertions(+) diff --git a/lib/Target/AArch64/AArch64InstrInfo.td b/lib/Target/AArch64/AArch64InstrInfo.td index 23d81fc478..8e5a4d3039 100644 --- a/lib/Target/AArch64/AArch64InstrInfo.td +++ b/lib/Target/AArch64/AArch64InstrInfo.td @@ -2587,6 +2587,7 @@ class A64I_SRexs_impl size, bits<3> opcode, string asm, dag outs, pat, itin> { let mayStore = 1; let PostEncoderMethod = "fixLoadStoreExclusive<1,0>"; + let Constraints = "@earlyclobber $Rs"; } multiclass A64I_SRex opcode, string prefix> { diff --git a/test/CodeGen/AArch64/atomic-ops.ll b/test/CodeGen/AArch64/atomic-ops.ll index de84ff46ec..5857faf80a 100644 --- a/test/CodeGen/AArch64/atomic-ops.ll +++ b/test/CodeGen/AArch64/atomic-ops.ll @@ -1,4 +1,5 @@ ; RUN: llc -mtriple=aarch64-none-linux-gnu -verify-machineinstrs < %s | FileCheck %s +; RUN: llc -mtriple=aarch64-none-linux-gnu -verify-machineinstrs < %s | FileCheck --check-prefix=CHECK-REG %s @var8 = global i8 0 @var16 = global i16 0 @@ -17,6 +18,8 @@ define i8 @test_atomic_load_add_i8(i8 %offset) nounwind { ; w0 below is a reasonable guess but could change: it certainly comes into the ; function there. ; CHECK-NEXT: add [[NEW:w[0-9]+]], w[[OLD]], w0 +; CHECK-REG: add w[[NEW:[0-9]+]], w{{[0-9]+}}, w0 +; CHECK-REG-NOT: stlxrb w[[NEW]], w[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stlxrb [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -37,6 +40,8 @@ define i16 @test_atomic_load_add_i16(i16 %offset) nounwind { ; w0 below is a reasonable guess but could change: it certainly comes into the ; function there. ; CHECK-NEXT: add [[NEW:w[0-9]+]], w[[OLD]], w0 +; CHECK-REG: add w[[NEW:[0-9]+]], w{{[0-9]+}}, w0 +; CHECK-REG-NOT: stxrh w[[NEW]], w[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stxrh [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -57,6 +62,8 @@ define i32 @test_atomic_load_add_i32(i32 %offset) nounwind { ; w0 below is a reasonable guess but could change: it certainly comes into the ; function there. ; CHECK-NEXT: add [[NEW:w[0-9]+]], w[[OLD]], w0 +; CHECK-REG: add w[[NEW:[0-9]+]], w{{[0-9]+}}, w0 +; CHECK-REG-NOT: stlxr w[[NEW]], w[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stlxr [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -77,6 +84,8 @@ define i64 @test_atomic_load_add_i64(i64 %offset) nounwind { ; x0 below is a reasonable guess but could change: it certainly comes into the ; function there. ; CHECK-NEXT: add [[NEW:x[0-9]+]], x[[OLD]], x0 +; CHECK-REG: add x[[NEW:[0-9]+]], x{{[0-9]+}}, x0 +; CHECK-REG-NOT: stxr w[[NEW]], x[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stxr [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -97,6 +106,8 @@ define i8 @test_atomic_load_sub_i8(i8 %offset) nounwind { ; w0 below is a reasonable guess but could change: it certainly comes into the ; function there. ; CHECK-NEXT: sub [[NEW:w[0-9]+]], w[[OLD]], w0 +; CHECK-REG: sub w[[NEW:[0-9]+]], w{{[0-9]+}}, w0 +; CHECK-REG-NOT: stxrb w[[NEW]], w[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stxrb [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -117,6 +128,8 @@ define i16 @test_atomic_load_sub_i16(i16 %offset) nounwind { ; w0 below is a reasonable guess but could change: it certainly comes into the ; function there. ; CHECK-NEXT: sub [[NEW:w[0-9]+]], w[[OLD]], w0 +; CHECK-REG: sub w[[NEW:[0-9]+]], w{{[0-9]+}}, w0 +; CHECK-REG-NOT: stlxrh w[[NEW]], w[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stlxrh [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -137,6 +150,8 @@ define i32 @test_atomic_load_sub_i32(i32 %offset) nounwind { ; w0 below is a reasonable guess but could change: it certainly comes into the ; function there. ; CHECK-NEXT: sub [[NEW:w[0-9]+]], w[[OLD]], w0 +; CHECK-REG: sub w[[NEW:[0-9]+]], w{{[0-9]+}}, w0 +; CHECK-REG-NOT: stxr w[[NEW]], w[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stxr [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -157,6 +172,8 @@ define i64 @test_atomic_load_sub_i64(i64 %offset) nounwind { ; x0 below is a reasonable guess but could change: it certainly comes into the ; function there. ; CHECK-NEXT: sub [[NEW:x[0-9]+]], x[[OLD]], x0 +; CHECK-REG: sub x[[NEW:[0-9]+]], x{{[0-9]+}}, x0 +; CHECK-REG-NOT: stlxr w[[NEW]], x[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stlxr [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -177,6 +194,8 @@ define i8 @test_atomic_load_and_i8(i8 %offset) nounwind { ; w0 below is a reasonable guess but could change: it certainly comes into the ; function there. ; CHECK-NEXT: and [[NEW:w[0-9]+]], w[[OLD]], w0 +; CHECK-REG: and w[[NEW:[0-9]+]], w{{[0-9]+}}, w0 +; CHECK-REG-NOT: stlxrb w[[NEW]], w[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stlxrb [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -197,6 +216,8 @@ define i16 @test_atomic_load_and_i16(i16 %offset) nounwind { ; w0 below is a reasonable guess but could change: it certainly comes into the ; function there. ; CHECK-NEXT: and [[NEW:w[0-9]+]], w[[OLD]], w0 +; CHECK-REG: and w[[NEW:[0-9]+]], w{{[0-9]+}}, w0 +; CHECK-REG-NOT: stxrh w[[NEW]], w[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stxrh [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -217,6 +238,8 @@ define i32 @test_atomic_load_and_i32(i32 %offset) nounwind { ; w0 below is a reasonable guess but could change: it certainly comes into the ; function there. ; CHECK-NEXT: and [[NEW:w[0-9]+]], w[[OLD]], w0 +; CHECK-REG: and w[[NEW:[0-9]+]], w{{[0-9]+}}, w0 +; CHECK-REG-NOT: stlxr w[[NEW]], w[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stlxr [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -237,6 +260,8 @@ define i64 @test_atomic_load_and_i64(i64 %offset) nounwind { ; x0 below is a reasonable guess but could change: it certainly comes into the ; function there. ; CHECK-NEXT: and [[NEW:x[0-9]+]], x[[OLD]], x0 +; CHECK-REG: and x[[NEW:[0-9]+]], x{{[0-9]+}}, x0 +; CHECK-REG-NOT: stxr w[[NEW]], x[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stxr [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -257,6 +282,8 @@ define i8 @test_atomic_load_or_i8(i8 %offset) nounwind { ; w0 below is a reasonable guess but could change: it certainly comes into the ; function there. ; CHECK-NEXT: orr [[NEW:w[0-9]+]], w[[OLD]], w0 +; CHECK-REG: orr w[[NEW:[0-9]+]], w{{[0-9]+}}, w0 +; CHECK-REG-NOT: stlxrb w[[NEW]], w[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stlxrb [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -277,6 +304,8 @@ define i16 @test_atomic_load_or_i16(i16 %offset) nounwind { ; w0 below is a reasonable guess but could change: it certainly comes into the ; function there. ; CHECK-NEXT: orr [[NEW:w[0-9]+]], w[[OLD]], w0 +; CHECK-REG: orr w[[NEW:[0-9]+]], w{{[0-9]+}}, w0 +; CHECK-REG-NOT: stxrh w[[NEW]], w[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stxrh [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -297,6 +326,8 @@ define i32 @test_atomic_load_or_i32(i32 %offset) nounwind { ; w0 below is a reasonable guess but could change: it certainly comes into the ; function there. ; CHECK-NEXT: orr [[NEW:w[0-9]+]], w[[OLD]], w0 +; CHECK-REG: orr w[[NEW:[0-9]+]], w{{[0-9]+}}, w0 +; CHECK-REG-NOT: stxr w[[NEW]], w[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stxr [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -317,6 +348,8 @@ define i64 @test_atomic_load_or_i64(i64 %offset) nounwind { ; x0 below is a reasonable guess but could change: it certainly comes into the ; function there. ; CHECK-NEXT: orr [[NEW:x[0-9]+]], x[[OLD]], x0 +; CHECK-REG: orr x[[NEW:[0-9]+]], x{{[0-9]+}}, x0 +; CHECK-REG-NOT: stlxr w[[NEW]], x[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stlxr [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -337,6 +370,8 @@ define i8 @test_atomic_load_xor_i8(i8 %offset) nounwind { ; w0 below is a reasonable guess but could change: it certainly comes into the ; function there. ; CHECK-NEXT: eor [[NEW:w[0-9]+]], w[[OLD]], w0 +; CHECK-REG: eor w[[NEW:[0-9]+]], w{{[0-9]+}}, w0 +; CHECK-REG-NOT: stxrb w[[NEW]], w[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stxrb [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -357,6 +392,8 @@ define i16 @test_atomic_load_xor_i16(i16 %offset) nounwind { ; w0 below is a reasonable guess but could change: it certainly comes into the ; function there. ; CHECK-NEXT: eor [[NEW:w[0-9]+]], w[[OLD]], w0 +; CHECK-REG: eor w[[NEW:[0-9]+]], w{{[0-9]+}}, w0 +; CHECK-REG-NOT: stxrh w[[NEW]], w[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stlxrh [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -377,6 +414,8 @@ define i32 @test_atomic_load_xor_i32(i32 %offset) nounwind { ; w0 below is a reasonable guess but could change: it certainly comes into the ; function there. ; CHECK-NEXT: eor [[NEW:w[0-9]+]], w[[OLD]], w0 +; CHECK-REG: eor w[[NEW:[0-9]+]], w{{[0-9]+}}, w0 +; CHECK-REG-NOT: stlxr w[[NEW]], w[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stlxr [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -397,6 +436,8 @@ define i64 @test_atomic_load_xor_i64(i64 %offset) nounwind { ; x0 below is a reasonable guess but could change: it certainly comes into the ; function there. ; CHECK-NEXT: eor [[NEW:x[0-9]+]], x[[OLD]], x0 +; CHECK-REG: eor x[[NEW:[0-9]+]], x{{[0-9]+}}, x0 +; CHECK-REG-NOT: stxr w[[NEW]], x[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stxr [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -416,6 +457,7 @@ define i8 @test_atomic_load_xchg_i8(i8 %offset) nounwind { ; CHECK-NEXT: ldxrb w[[OLD:[0-9]+]], [x[[ADDR]]] ; w0 below is a reasonable guess but could change: it certainly comes into the ; function there. +; CHECK-REG-NOT: stxrb w0, w0, [x{{[0-9]+}}] ; CHECK-NEXT: stxrb [[STATUS:w[0-9]+]], w0, [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -435,6 +477,7 @@ define i16 @test_atomic_load_xchg_i16(i16 %offset) nounwind { ; CHECK-NEXT: ldaxrh w[[OLD:[0-9]+]], [x[[ADDR]]] ; w0 below is a reasonable guess but could change: it certainly comes into the ; function there. +; CHECK-REG-NOT: stlxrh w0, w0, [x{{[0-9]+}}] ; CHECK-NEXT: stlxrh [[STATUS:w[0-9]+]], w0, [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -454,6 +497,7 @@ define i32 @test_atomic_load_xchg_i32(i32 %offset) nounwind { ; CHECK-NEXT: ldxr w[[OLD:[0-9]+]], [x[[ADDR]]] ; w0 below is a reasonable guess but could change: it certainly comes into the ; function there. +; CHECK-REG-NOT: stlxr w0, w0, [x{{[0-9]+}}] ; CHECK-NEXT: stlxr [[STATUS:w[0-9]+]], w0, [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -473,6 +517,7 @@ define i64 @test_atomic_load_xchg_i64(i64 %offset) nounwind { ; CHECK-NEXT: ldaxr x[[OLD:[0-9]+]], [x[[ADDR]]] ; x0 below is a reasonable guess but could change: it certainly comes into the ; function there. +; CHECK-REG-NOT: stxr w0, x0, [x{{[0-9]+}}] ; CHECK-NEXT: stxr [[STATUS:w[0-9]+]], x0, [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -495,6 +540,8 @@ define i8 @test_atomic_load_min_i8(i8 %offset) nounwind { ; function there. ; CHECK-NEXT: cmp w0, w[[OLD]], sxtb ; CHECK-NEXT: csel [[NEW:w[0-9]+]], w[[OLD]], w0, gt +; CHECK-REG: csel w[[NEW:[0-9]+]], w{{[0-9]+}}, w0, gt +; CHECK-REG-NOT: stxrb w[[NEW]], w[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stxrb [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -516,6 +563,8 @@ define i16 @test_atomic_load_min_i16(i16 %offset) nounwind { ; function there. ; CHECK-NEXT: cmp w0, w[[OLD]], sxth ; CHECK-NEXT: csel [[NEW:w[0-9]+]], w[[OLD]], w0, gt +; CHECK-REG: csel w[[NEW:[0-9]+]], w{{[0-9]+}}, w0, gt +; CHECK-REG-NOT: stlxrh w[[NEW]], w[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stlxrh [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -537,6 +586,8 @@ define i32 @test_atomic_load_min_i32(i32 %offset) nounwind { ; function there. ; CHECK-NEXT: cmp w0, w[[OLD]] ; CHECK-NEXT: csel [[NEW:w[0-9]+]], w[[OLD]], w0, gt +; CHECK-REG: csel w[[NEW:[0-9]+]], w{{[0-9]+}}, w0, gt +; CHECK-REG-NOT: stxr w[[NEW]], w[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stxr [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -558,6 +609,8 @@ define i64 @test_atomic_load_min_i64(i64 %offset) nounwind { ; function there. ; CHECK-NEXT: cmp x0, x[[OLD]] ; CHECK-NEXT: csel [[NEW:x[0-9]+]], x[[OLD]], x0, gt +; CHECK-REG: csel x[[NEW:[0-9]+]], x{{[0-9]+}}, x0, gt +; CHECK-REG-NOT: stlxr w[[NEW]], x[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stlxr [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -579,6 +632,8 @@ define i8 @test_atomic_load_max_i8(i8 %offset) nounwind { ; function there. ; CHECK-NEXT: cmp w0, w[[OLD]], sxtb ; CHECK-NEXT: csel [[NEW:w[0-9]+]], w[[OLD]], w0, lt +; CHECK-REG: csel w[[NEW:[0-9]+]], w{{[0-9]+}}, w0, lt +; CHECK-REG-NOT: stlxrb w[[NEW]], w[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stlxrb [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -600,6 +655,8 @@ define i16 @test_atomic_load_max_i16(i16 %offset) nounwind { ; function there. ; CHECK-NEXT: cmp w0, w[[OLD]], sxth ; CHECK-NEXT: csel [[NEW:w[0-9]+]], w[[OLD]], w0, lt +; CHECK-REG: csel w[[NEW:[0-9]+]], w{{[0-9]+}}, w0, lt +; CHECK-REG-NOT: stxrh w[[NEW]], w[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stxrh [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -621,6 +678,8 @@ define i32 @test_atomic_load_max_i32(i32 %offset) nounwind { ; function there. ; CHECK-NEXT: cmp w0, w[[OLD]] ; CHECK-NEXT: csel [[NEW:w[0-9]+]], w[[OLD]], w0, lt +; CHECK-REG: csel w[[NEW:[0-9]+]], w{{[0-9]+}}, w0, lt +; CHECK-REG-NOT: stlxr w[[NEW]], w[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stlxr [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -642,6 +701,8 @@ define i64 @test_atomic_load_max_i64(i64 %offset) nounwind { ; function there. ; CHECK-NEXT: cmp x0, x[[OLD]] ; CHECK-NEXT: csel [[NEW:x[0-9]+]], x[[OLD]], x0, lt +; CHECK-REG: csel x[[NEW:[0-9]+]], x{{[0-9]+}}, x0, lt +; CHECK-REG-NOT: stlxr w[[NEW]], x[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stxr [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -663,6 +724,8 @@ define i8 @test_atomic_load_umin_i8(i8 %offset) nounwind { ; function there. ; CHECK-NEXT: cmp w0, w[[OLD]], uxtb ; CHECK-NEXT: csel [[NEW:w[0-9]+]], w[[OLD]], w0, hi +; CHECK-REG: csel w[[NEW:[0-9]+]], w{{[0-9]+}}, w0, hi +; CHECK-REG-NOT: stlxr w[[NEW]], w[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stxrb [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -684,6 +747,8 @@ define i16 @test_atomic_load_umin_i16(i16 %offset) nounwind { ; function there. ; CHECK-NEXT: cmp w0, w[[OLD]], uxth ; CHECK-NEXT: csel [[NEW:w[0-9]+]], w[[OLD]], w0, hi +; CHECK-REG: csel w[[NEW:[0-9]+]], w{{[0-9]+}}, w0, hi +; CHECK-REG-NOT: stxrh w[[NEW]], w[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stxrh [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -705,6 +770,8 @@ define i32 @test_atomic_load_umin_i32(i32 %offset) nounwind { ; function there. ; CHECK-NEXT: cmp w0, w[[OLD]] ; CHECK-NEXT: csel [[NEW:w[0-9]+]], w[[OLD]], w0, hi +; CHECK-REG: csel w[[NEW:[0-9]+]], w{{[0-9]+}}, w0, hi +; CHECK-REG-NOT: stlxr w[[NEW]], w[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stlxr [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -726,6 +793,8 @@ define i64 @test_atomic_load_umin_i64(i64 %offset) nounwind { ; function there. ; CHECK-NEXT: cmp x0, x[[OLD]] ; CHECK-NEXT: csel [[NEW:x[0-9]+]], x[[OLD]], x0, hi +; CHECK-REG: csel x[[NEW:[0-9]+]], x{{[0-9]+}}, x0, hi +; CHECK-REG-NOT: stlxr w[[NEW]], x[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stlxr [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -747,6 +816,8 @@ define i8 @test_atomic_load_umax_i8(i8 %offset) nounwind { ; function there. ; CHECK-NEXT: cmp w0, w[[OLD]], uxtb ; CHECK-NEXT: csel [[NEW:w[0-9]+]], w[[OLD]], w0, lo +; CHECK-REG: csel w[[NEW:[0-9]+]], w{{[0-9]+}}, w0, lo +; CHECK-REG-NOT: stlxrb w[[NEW]], w[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stlxrb [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -768,6 +839,8 @@ define i16 @test_atomic_load_umax_i16(i16 %offset) nounwind { ; function there. ; CHECK-NEXT: cmp w0, w[[OLD]], uxth ; CHECK-NEXT: csel [[NEW:w[0-9]+]], w[[OLD]], w0, lo +; CHECK-REG: csel w[[NEW:[0-9]+]], w{{[0-9]+}}, w0, lo +; CHECK-REG-NOT: stxrh w[[NEW]], w[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stxrh [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -789,6 +862,8 @@ define i32 @test_atomic_load_umax_i32(i32 %offset) nounwind { ; function there. ; CHECK-NEXT: cmp w0, w[[OLD]] ; CHECK-NEXT: csel [[NEW:w[0-9]+]], w[[OLD]], w0, lo +; CHECK-REG: csel w[[NEW:[0-9]+]], w{{[0-9]+}}, w0, lo +; CHECK-REG-NOT: stlxr w[[NEW]], w[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stlxr [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -810,6 +885,8 @@ define i64 @test_atomic_load_umax_i64(i64 %offset) nounwind { ; function there. ; CHECK-NEXT: cmp x0, x[[OLD]] ; CHECK-NEXT: csel [[NEW:x[0-9]+]], x[[OLD]], x0, lo +; CHECK-REG: csel x[[NEW:[0-9]+]], x{{[0-9]+}}, x0, lo +; CHECK-REG-NOT: stlxr w[[NEW]], x[[NEW]], [x{{[0-9]+}}] ; CHECK-NEXT: stlxr [[STATUS:w[0-9]+]], [[NEW]], [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], .LBB{{[0-9]+}}_1 ; CHECK-NOT: dmb @@ -832,6 +909,7 @@ define i8 @test_atomic_cmpxchg_i8(i8 %wanted, i8 %new) nounwind { ; CHECK-NEXT: cmp w[[OLD]], w0 ; CHECK-NEXT: b.ne [[GET_OUT:.LBB[0-9]+_[0-9]+]] ; As above, w1 is a reasonable guess. +; CHECK-REG-NOT: stxrb w1, w1, [x{{[0-9]+}}] ; CHECK: stxrb [[STATUS:w[0-9]+]], w1, [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], [[STARTAGAIN]] ; CHECK-NOT: dmb @@ -854,6 +932,7 @@ define i16 @test_atomic_cmpxchg_i16(i16 %wanted, i16 %new) nounwind { ; CHECK-NEXT: cmp w[[OLD]], w0 ; CHECK-NEXT: b.ne [[GET_OUT:.LBB[0-9]+_[0-9]+]] ; As above, w1 is a reasonable guess. +; CHECK-REG-NOT: stlxrh w1, w1, [x{{[0-9]+}}] ; CHECK: stlxrh [[STATUS:w[0-9]+]], w1, [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], [[STARTAGAIN]] ; CHECK-NOT: dmb @@ -876,6 +955,7 @@ define i32 @test_atomic_cmpxchg_i32(i32 %wanted, i32 %new) nounwind { ; CHECK-NEXT: cmp w[[OLD]], w0 ; CHECK-NEXT: b.ne [[GET_OUT:.LBB[0-9]+_[0-9]+]] ; As above, w1 is a reasonable guess. +; CHECK-REG-NOT: stlxr w1, w1, [x{{[0-9]+}}] ; CHECK: stlxr [[STATUS:w[0-9]+]], w1, [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], [[STARTAGAIN]] ; CHECK-NOT: dmb @@ -898,6 +978,7 @@ define i64 @test_atomic_cmpxchg_i64(i64 %wanted, i64 %new) nounwind { ; CHECK-NEXT: cmp x[[OLD]], x0 ; CHECK-NEXT: b.ne [[GET_OUT:.LBB[0-9]+_[0-9]+]] ; As above, w1 is a reasonable guess. +; CHECK-REG-NOT: stxr w1, x1, [x{{[0-9]+}}] ; CHECK: stxr [[STATUS:w[0-9]+]], x1, [x[[ADDR]]] ; CHECK-NEXT: cbnz [[STATUS]], [[STARTAGAIN]] ; CHECK-NOT: dmb -- cgit v1.2.3