1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc < %s -mtriple=thumbv7m-none-eabi -mcpu=cortex-m7 | FileCheck %s --check-prefix=CHECK
3 ; RUN: llc < %s -mtriple=thumbv7m-none-eabi -mcpu=cortex-m7 -arm-data-bank-mask=-1 | FileCheck %s --check-prefix=NOBANK
5 ; This tests the cortex-m7 bank conflict hazard recognizer.
6 ; Normally both loads would be scheduled early (both in the first cycle) due to
7 ; their latency. But will bank conflict to TCM so are scheduled in different
10 define i32 @test(ptr %x0, i32 %y, i32 %z) {
12 ; CHECK: @ %bb.0: @ %entry
13 ; CHECK-NEXT: ldr r3, [r0]
14 ; CHECK-NEXT: subs r1, r3, r1
15 ; CHECK-NEXT: ldr r0, [r0, #8]
16 ; CHECK-NEXT: subs r1, r1, r2
17 ; CHECK-NEXT: adds r1, #1
18 ; CHECK-NEXT: muls r0, r1, r0
21 ; NOBANK: @ %bb.0: @ %entry
22 ; NOBANK-NEXT: ldr r3, [r0]
23 ; NOBANK-NEXT: ldr r0, [r0, #8]
24 ; NOBANK-NEXT: subs r1, r3, r1
25 ; NOBANK-NEXT: subs r1, r1, r2
26 ; NOBANK-NEXT: adds r1, #1
27 ; NOBANK-NEXT: muls r0, r1, r0
30 %0 = load i32, ptr %x0, align 4
31 %mul3 = add nsw i32 %0, 1
32 %mul = sub nsw i32 %mul3, %y
33 %sub = sub nsw i32 %mul, %z
34 %arrayidx1 = getelementptr inbounds i32, ptr %x0, i32 2
35 %1 = load i32, ptr %arrayidx1, align 4
36 %mul2 = mul nsw i32 %sub, %1