| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc < %s | FileCheck %s |
| |
| target datalayout = "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64" |
| target triple = "thumbv6m-arm-none-eabi" |
| |
| ; From https://reviews.llvm.org/D62266 |
| ; This used to cause an endless loop in DAGCombine, |
| ; since we were hoisting two binops with constants, one constant being opaque, |
| ; which is why they weren't getting constant folded. |
| |
| @a = dso_local local_unnamed_addr global i32 0, align 4 |
| @b = dso_local local_unnamed_addr global i32 0, align 4 |
| |
| ; Function Attrs: minsize nounwind optsize |
| define dso_local i32 @c() local_unnamed_addr #0 { |
| ; CHECK-LABEL: c: |
| ; CHECK: @ %bb.0: @ %entry |
| ; CHECK-NEXT: .save {r4, lr} |
| ; CHECK-NEXT: push {r4, lr} |
| ; CHECK-NEXT: ldr r0, .LCPI0_0 |
| ; CHECK-NEXT: ldr r0, [r0] |
| ; CHECK-NEXT: ldr r4, .LCPI0_1 |
| ; CHECK-NEXT: subs r0, r4, r0 |
| ; CHECK-NEXT: adds r0, r0, #1 |
| ; CHECK-NEXT: bl d |
| ; CHECK-NEXT: ldr r0, .LCPI0_2 |
| ; CHECK-NEXT: ldr r0, [r0] |
| ; CHECK-NEXT: cmp r0, r4 |
| ; CHECK-NEXT: ble .LBB0_2 |
| ; CHECK-NEXT: @ %bb.1: @ %if.then |
| ; CHECK-NEXT: bl e |
| ; CHECK-NEXT: .LBB0_2: @ %if.end |
| ; CHECK-NEXT: pop {r4, pc} |
| ; CHECK-NEXT: .p2align 2 |
| ; CHECK-NEXT: @ %bb.3: |
| ; CHECK-NEXT: .LCPI0_0: |
| ; CHECK-NEXT: .long a |
| ; CHECK-NEXT: .LCPI0_1: |
| ; CHECK-NEXT: .long 1999 @ 0x7cf |
| ; CHECK-NEXT: .LCPI0_2: |
| ; CHECK-NEXT: .long b |
| entry: |
| %0 = load i32, i32* @a, align 4 |
| %sub = sub nsw i32 2000, %0 |
| %call = tail call i32 bitcast (i32 (...)* @d to i32 (i32)*)(i32 %sub) #2 |
| %1 = load i32, i32* @b, align 4 |
| %cmp = icmp sgt i32 %1, 1999 |
| br i1 %cmp, label %if.then, label %if.end |
| |
| if.then: ; preds = %entry |
| %call1 = tail call i32 bitcast (i32 (...)* @e to i32 ()*)() #2 |
| br label %if.end |
| |
| if.end: ; preds = %if.then, %entry |
| ret i32 undef |
| } |
| |
| declare dso_local i32 @d(...) local_unnamed_addr #1 |
| declare dso_local i32 @e(...) local_unnamed_addr #1 |