| ; RUN: llc -stop-after=machine-scheduler -debug-only dagcombine,selectiondag -o - %s 2>&1 | FileCheck %s |
| ; REQUIRES: asserts |
| ; pr42638 |
| target triple = "armv8r-arm-none-eabi" |
| %struct.__va_list = type { i8* } |
| define double @foo(i32 %P0, ...) #0 { |
| entry: |
| %V1 = alloca [8 x i8], align 8 |
| %vl = alloca %struct.__va_list, align 4 |
| %0 = getelementptr inbounds [8 x i8], [8 x i8]* %V1, i32 0, i32 0 |
| call void asm sideeffect "", "r"(i8* nonnull %0) |
| %1 = bitcast %struct.__va_list* %vl to i8* |
| call void @llvm.va_start(i8* nonnull %1) |
| %2 = bitcast %struct.__va_list* %vl to double** |
| %argp.cur3 = load double*, double** %2, align 4 |
| %v.sroa.0.0.copyload = load double, double* %argp.cur3, align 4 |
| ret double %v.sroa.0.0.copyload |
| } |
| |
| declare void @llvm.va_start(i8*) |
| |
| attributes #0 = { "target-cpu"="cortex-r52" "target-features"="-fp64" } |
| |
| ; Ensures that the machine scheduler does not move accessing the upper |
| ; 32 bits of the double to before actually storing it to memory |
| |
| ; CHECK: Creating new node: {{.*}} = add FrameIndex:i32<2>, Constant:i32<4> |
| ; CHECK-NEXT: Creating new node: {{.*}} i32,ch = load<(load 4 from [[MEM:%.*]] + 4)> |
| ; CHECK: INLINEASM |
| ; CHECK: (load 4 from [[MEM]] + 4) |
| ; CHECK-NOT: (store 4 into [[MEM]] + 4) |
| |
| |
