diff options
Diffstat (limited to 'llvm/test/CodeGen/ARM/overflow-intrinsic-optimizations.ll')
| -rw-r--r-- | llvm/test/CodeGen/ARM/overflow-intrinsic-optimizations.ll | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/ARM/overflow-intrinsic-optimizations.ll b/llvm/test/CodeGen/ARM/overflow-intrinsic-optimizations.ll new file mode 100644 index 00000000000..2bfd18720bc --- /dev/null +++ b/llvm/test/CodeGen/ARM/overflow-intrinsic-optimizations.ll @@ -0,0 +1,206 @@ +; RUN: llc < %s -mtriple=arm-eabi -mcpu=generic | FileCheck %s + +define i32 @sadd(i32 %a, i32 %b) local_unnamed_addr #0 { +; CHECK-LABEL: sadd: +; CHECK: adds r0, r0, r1 +; CHECK-NEXT: movvc pc, lr +entry: + %0 = tail call { i32, i1 } @llvm.sadd.with.overflow.i32(i32 %a, i32 %b) + %1 = extractvalue { i32, i1 } %0, 1 + br i1 %1, label %trap, label %cont + +trap: + tail call void @llvm.trap() #2 + unreachable + +cont: + %2 = extractvalue { i32, i1 } %0, 0 + ret i32 %2 + +} + +define i32 @uadd(i32 %a, i32 %b) local_unnamed_addr #0 { +; CHECK-LABEL: uadd: +; CHECK: adds r0, r0, r1 +; CHECK-NEXT: movlo pc, lr +entry: + %0 = tail call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 %a, i32 %b) + %1 = extractvalue { i32, i1 } %0, 1 + br i1 %1, label %trap, label %cont + +trap: + tail call void @llvm.trap() #2 + unreachable + +cont: + %2 = extractvalue { i32, i1 } %0, 0 + ret i32 %2 + +} + +define i32 @ssub(i32 %a, i32 %b) local_unnamed_addr #0 { +; CHECK-LABEL: ssub: +; CHECK: subs r0, r0, r1 +; CHECK-NEXT: movvc pc, lr +entry: + %0 = tail call { i32, i1 } @llvm.ssub.with.overflow.i32(i32 %a, i32 %b) + %1 = extractvalue { i32, i1 } %0, 1 + br i1 %1, label %trap, label %cont + +trap: + tail call void @llvm.trap() #2 + unreachable + +cont: + %2 = extractvalue { i32, i1 } %0, 0 + ret i32 %2 + +} + +define i32 @usub(i32 %a, i32 %b) local_unnamed_addr #0 { +; CHECK-LABEL: usub: +; CHECK: subs r0, r0, r1 +; CHECK-NEXT: movhs pc, lr +entry: + %0 = tail call { i32, i1 } @llvm.usub.with.overflow.i32(i32 %a, i32 %b) + %1 = extractvalue { i32, i1 } %0, 1 + br i1 %1, label %trap, label %cont + +trap: + tail call void @llvm.trap() #2 + unreachable + +cont: + %2 = extractvalue { i32, i1 } %0, 0 + ret i32 %2 + +} + +define i32 @smul(i32 %a, i32 %b) local_unnamed_addr #0 { +; CHECK-LABEL: smul: +; CHECK: smull r0, r[[RHI:[0-9]+]], {{r[0-9]+}}, {{r[0-9]+}} +; CHECK-NEXT: cmp r[[RHI]], r0, asr #31 +; CHECK-NEXT: moveq pc, lr +entry: + %0 = tail call { i32, i1 } @llvm.smul.with.overflow.i32(i32 %a, i32 %b) + %1 = extractvalue { i32, i1 } %0, 1 + br i1 %1, label %trap, label %cont + +trap: + tail call void @llvm.trap() #2 + unreachable + +cont: + %2 = extractvalue { i32, i1 } %0, 0 + ret i32 %2 +} + +define i32 @umul(i32 %a, i32 %b) local_unnamed_addr #0 { +; CHECK-LABEL: umul: +; CHECK: umull r0, r[[RHI:[0-9]+]], {{r[0-9]+}}, {{r[0-9]+}} +; CHECK-NEXT: cmp r[[RHI]], #0 +; CHECK-NEXT: moveq pc, lr +entry: + %0 = tail call { i32, i1 } @llvm.umul.with.overflow.i32(i32 %a, i32 %b) + %1 = extractvalue { i32, i1 } %0, 1 + br i1 %1, label %trap, label %cont + +trap: + tail call void @llvm.trap() #2 + unreachable + +cont: + %2 = extractvalue { i32, i1 } %0, 0 + ret i32 %2 +} + +define void @sum(i32* %a, i32* %b, i32 %n) local_unnamed_addr #0 { +; CHECK-LABEL: sum: +; CHECK: ldr [[R0:r[0-9]+]], +; CHECK-NEXT: ldr [[R1:r[0-9]+|lr]], +; CHECK-NEXT: adds [[R2:r[0-9]+]], [[R1]], [[R0]] +; CHECK-NEXT: strvc [[R2]], +; CHECK-NEXT: addsvc +; CHECK-NEXT: bvs +entry: + %cmp7 = icmp eq i32 %n, 0 + br i1 %cmp7, label %for.cond.cleanup, label %for.body + +for.cond.cleanup: + ret void + +for.body: + %i.08 = phi i32 [ %7, %cont2 ], [ 0, %entry ] + %arrayidx = getelementptr inbounds i32, i32* %b, i32 %i.08 + %0 = load i32, i32* %arrayidx, align 4 + %arrayidx1 = getelementptr inbounds i32, i32* %a, i32 %i.08 + %1 = load i32, i32* %arrayidx1, align 4 + %2 = tail call { i32, i1 } @llvm.sadd.with.overflow.i32(i32 %1, i32 %0) + %3 = extractvalue { i32, i1 } %2, 1 + br i1 %3, label %trap, label %cont + +trap: + tail call void @llvm.trap() #2 + unreachable + +cont: + %4 = extractvalue { i32, i1 } %2, 0 + store i32 %4, i32* %arrayidx1, align 4 + %5 = tail call { i32, i1 } @llvm.sadd.with.overflow.i32(i32 %i.08, i32 1) + %6 = extractvalue { i32, i1 } %5, 1 + br i1 %6, label %trap, label %cont2 + +cont2: + %7 = extractvalue { i32, i1 } %5, 0 + %cmp = icmp eq i32 %7, %n + br i1 %cmp, label %for.cond.cleanup, label %for.body + +} + +define void @extern_loop(i32 %n) local_unnamed_addr #0 { +; Do not replace the compare around the clobbering call. +; CHECK: add {{r[0-9]+}}, {{r[0-9]+}}, #1 +; CHECK-NEXT: bl external_fn +; CHECK: cmp +entry: + %0 = tail call { i32, i1 } @llvm.ssub.with.overflow.i32(i32 %n, i32 1) + %1 = extractvalue { i32, i1 } %0, 1 + br i1 %1, label %trap, label %cont.lr.ph + +cont.lr.ph: + %2 = extractvalue { i32, i1 } %0, 0 + %cmp5 = icmp sgt i32 %2, 0 + br i1 %cmp5, label %for.body.preheader, label %for.cond.cleanup + +for.body.preheader: + br label %for.body + +trap: + tail call void @llvm.trap() #2 + unreachable + +for.cond.cleanup: + ret void + +for.body: + %i.046 = phi i32 [ %5, %cont1 ], [ 0, %for.body.preheader ] + tail call void bitcast (void (...)* @external_fn to void ()*)() #4 + %3 = tail call { i32, i1 } @llvm.sadd.with.overflow.i32(i32 %i.046, i32 1) + %4 = extractvalue { i32, i1 } %3, 1 + br i1 %4, label %trap, label %cont1 + +cont1: + %5 = extractvalue { i32, i1 } %3, 0 + %cmp = icmp slt i32 %5, %2 + br i1 %cmp, label %for.body, label %for.cond.cleanup +} + +declare void @external_fn(...) local_unnamed_addr #0 + +declare void @llvm.trap() #2 +declare { i32, i1 } @llvm.sadd.with.overflow.i32(i32, i32) #1 +declare { i32, i1 } @llvm.uadd.with.overflow.i32(i32, i32) #1 +declare { i32, i1 } @llvm.ssub.with.overflow.i32(i32, i32) #1 +declare { i32, i1 } @llvm.usub.with.overflow.i32(i32, i32) #1 +declare { i32, i1 } @llvm.smul.with.overflow.i32(i32, i32) #1 +declare { i32, i1 } @llvm.umul.with.overflow.i32(i32, i32) #1 |
