llvm-6502/test/CodeGen/Thumb2/thumb2-spill-q.ll
Anton Korobeynikov 7cca606aaa Dynamic stack realignment use of sp register as source/dest register
in "bic sp, sp, #15" leads to unpredicatble behaviour in Thumb2 mode.
Emit the following code instead:
mov r4, sp
bic r4, r4, #15
mov sp, r4

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90724 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-06 22:39:50 +00:00

59 lines
3.4 KiB
LLVM

; RUN: llc < %s -mtriple=thumbv7-elf -mattr=+neon | FileCheck %s
; PR4789
%bar = type { float, float, float }
%baz = type { i32, [16 x %bar], [16 x float], [16 x i32], i8 }
%foo = type { <4 x float> }
%quux = type { i32 (...)**, %baz*, i32 }
%quuz = type { %quux, i32, %bar, [128 x i8], [16 x %foo], %foo, %foo, %foo }
declare <4 x float> @llvm.arm.neon.vld1.v4f32(i8*) nounwind readonly
define arm_apcscc void @aaa(%quuz* %this, i8* %block) {
; CHECK: aaa:
; CHECK: bic r4, r4, #15
; CHECK: vst1.64 {{.*}}sp, :128
; CHECK: vld1.64 {{.*}}sp, :128
entry:
%0 = call <4 x float> @llvm.arm.neon.vld1.v4f32(i8* undef) nounwind ; <<4 x float>> [#uses=1]
store float 6.300000e+01, float* undef, align 4
%1 = call <4 x float> @llvm.arm.neon.vld1.v4f32(i8* undef) nounwind ; <<4 x float>> [#uses=1]
store float 0.000000e+00, float* undef, align 4
%2 = call <4 x float> @llvm.arm.neon.vld1.v4f32(i8* undef) nounwind ; <<4 x float>> [#uses=1]
%val173 = load <4 x float>* undef ; <<4 x float>> [#uses=1]
br label %bb4
bb4: ; preds = %bb193, %entry
%besterror.0.2264 = phi <4 x float> [ undef, %entry ], [ %besterror.0.0, %bb193 ] ; <<4 x float>> [#uses=2]
%part0.0.0261 = phi <4 x float> [ zeroinitializer, %entry ], [ %23, %bb193 ] ; <<4 x float>> [#uses=2]
%3 = fmul <4 x float> zeroinitializer, %0 ; <<4 x float>> [#uses=2]
%4 = fadd <4 x float> %3, %part0.0.0261 ; <<4 x float>> [#uses=1]
%5 = shufflevector <4 x float> %3, <4 x float> undef, <2 x i32> <i32 2, i32 3> ; <<2 x float>> [#uses=1]
%6 = shufflevector <2 x float> %5, <2 x float> undef, <4 x i32> <i32 1, i32 1, i32 1, i32 1> ; <<4 x float>> [#uses=1]
%7 = fmul <4 x float> %1, undef ; <<4 x float>> [#uses=1]
%8 = fadd <4 x float> %7, <float 5.000000e-01, float 5.000000e-01, float 5.000000e-01, float 5.000000e-01> ; <<4 x float>> [#uses=1]
%9 = fptosi <4 x float> %8 to <4 x i32> ; <<4 x i32>> [#uses=1]
%10 = sitofp <4 x i32> %9 to <4 x float> ; <<4 x float>> [#uses=1]
%11 = fmul <4 x float> %10, %2 ; <<4 x float>> [#uses=1]
%12 = fmul <4 x float> undef, %6 ; <<4 x float>> [#uses=1]
%13 = fmul <4 x float> %11, %4 ; <<4 x float>> [#uses=1]
%14 = fsub <4 x float> %12, %13 ; <<4 x float>> [#uses=1]
%15 = fsub <4 x float> %14, undef ; <<4 x float>> [#uses=1]
%16 = fmul <4 x float> %15, <float 2.000000e+00, float 2.000000e+00, float 2.000000e+00, float 2.000000e+00> ; <<4 x float>> [#uses=1]
%17 = fadd <4 x float> %16, undef ; <<4 x float>> [#uses=1]
%18 = fmul <4 x float> %17, %val173 ; <<4 x float>> [#uses=1]
%19 = shufflevector <4 x float> %18, <4 x float> undef, <2 x i32> <i32 2, i32 3> ; <<2 x float>> [#uses=1]
%20 = shufflevector <2 x float> %19, <2 x float> undef, <4 x i32> zeroinitializer ; <<4 x float>> [#uses=1]
%21 = fadd <4 x float> zeroinitializer, %20 ; <<4 x float>> [#uses=2]
%22 = fcmp ogt <4 x float> %besterror.0.2264, %21 ; <<4 x i1>> [#uses=0]
br i1 undef, label %bb193, label %bb186
bb186: ; preds = %bb4
br label %bb193
bb193: ; preds = %bb186, %bb4
%besterror.0.0 = phi <4 x float> [ %21, %bb186 ], [ %besterror.0.2264, %bb4 ] ; <<4 x float>> [#uses=1]
%23 = fadd <4 x float> %part0.0.0261, zeroinitializer ; <<4 x float>> [#uses=1]
br label %bb4
}