From: David Green <david.green@arm.com>
Date: Thu, 27 Jun 2019 16:56:41 +0000 (+0000)
Subject: [ARM] Move low overhead loop codegen tests into a separate file. NFC
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=704b871cc4114b405e3b1ae09bd3909a3f9bfa33;p=llvm

[ARM] Move low overhead loop codegen tests into a separate file. NFC


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@364565 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/test/Transforms/HardwareLoops/ARM/calls-codegen.ll b/test/Transforms/HardwareLoops/ARM/calls-codegen.ll
new file mode 100644
index 00000000000..85160ced319
--- /dev/null
+++ b/test/Transforms/HardwareLoops/ARM/calls-codegen.ll
@@ -0,0 +1,58 @@
+; RUN: llc -mtriple=thumbv8.1m.main-arm-none-eabi -mattr=+lob,+mve.fp -disable-arm-loloops=false %s -o - | FileCheck %s
+
+; CHECK-LABEL: test_target_specific:
+; CHECK:        mov.w lr, #50
+; CHECK:        dls lr, lr
+; CHECK-NOT:    mov lr,
+; CHECK:      [[LOOP_HEADER:\.LBB[0-9_]+]]:
+; CHECK:        le lr, [[LOOP_HEADER]]
+; CHECK-NOT:    b .
+; CHECK:      @ %exit
+
+define i32 @test_target_specific(i32* %a, i32* %b) {
+entry:
+  br label %loop
+loop:
+  %acc = phi i32 [ 0, %entry ], [ %res, %loop ]
+  %count = phi i32 [ 0, %entry ], [ %count.next, %loop ]
+  %addr.a = getelementptr i32, i32* %a, i32 %count
+  %addr.b = getelementptr i32, i32* %b, i32 %count
+  %load.a = load i32, i32* %addr.a
+  %load.b = load i32, i32* %addr.b
+  %res = call i32 @llvm.arm.smlad(i32 %load.a, i32 %load.b, i32 %acc)
+  %count.next = add nuw i32 %count, 2
+  %cmp = icmp ne i32 %count.next, 100
+  br i1 %cmp, label %loop, label %exit
+exit:
+  ret i32 %res
+}
+
+; CHECK-LABEL: test_fabs:
+; CHECK:        mov.w lr, #100
+; CHECK:        dls lr, lr
+; CHECK-NOT:    mov lr,
+; CHECK:      [[LOOP_HEADER:\.LBB[0-9_]+]]:
+; CHECK-NOT:    bl
+; CHECK:        le lr, [[LOOP_HEADER]]
+; CHECK-NOT:    b .
+; CHECK:      @ %exit
+
+define float @test_fabs(float* %a) {
+entry:
+  br label %loop
+loop:
+  %acc = phi float [ 0.0, %entry ], [ %res, %loop ]
+  %count = phi i32 [ 0, %entry ], [ %count.next, %loop ]
+  %addr.a = getelementptr float, float* %a, i32 %count
+  %load.a = load float, float* %addr.a
+  %abs = call float @llvm.fabs.f32(float %load.a)
+  %res = fadd float %abs, %acc
+  %count.next = add nuw i32 %count, 1
+  %cmp = icmp ne i32 %count.next, 100
+  br i1 %cmp, label %loop, label %exit
+exit:
+  ret float %res
+}
+
+declare i32 @llvm.arm.smlad(i32, i32, i32)
+declare float @llvm.fabs.f32(float)
diff --git a/test/Transforms/HardwareLoops/ARM/calls.ll b/test/Transforms/HardwareLoops/ARM/calls.ll
index d9018b8730d..d2cce5c3814 100644
--- a/test/Transforms/HardwareLoops/ARM/calls.ll
+++ b/test/Transforms/HardwareLoops/ARM/calls.ll
@@ -3,7 +3,6 @@
 ; RUN: opt -mtriple=thumbv8.1m.main-arm-none-eabi -mattr=+fp-armv8,+fullfp16 -hardware-loops -disable-arm-loloops=false %s -S -o - | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-FP64
 ; RUN: opt -mtriple=thumbv8.1m.main-arm-none-eabi -mattr=+mve -hardware-loops -disable-arm-loloops=false %s -S -o - | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-MVE
 ; RUN: opt -mtriple=thumbv8.1m.main-arm-none-eabi -mattr=+mve.fp -hardware-loops -disable-arm-loloops=false %s -S -o - | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-MVEFP
-; RUN: llc -mtriple=thumbv8.1m.main-arm-none-eabi -mattr=+lob,+mve.fp -disable-arm-loloops=false %s -o - | FileCheck %s --check-prefix=CHECK-LLC
 
 ; CHECK-LABEL: skip_call
 ; CHECK-NOT: call void @llvm.set.loop.iterations
@@ -41,15 +40,6 @@ while.end:
 ; CHECK: [[CMP:%[^ ]+]] = icmp ne i32 [[LOOP_DEC]], 0
 ; CHECK: br i1 [[CMP]], label %loop, label %exit
 
-; CHECK-LLC-LABEL: test_target_specific:
-; CHECK-LLC:        mov.w lr, #50
-; CHECK-LLC:        dls lr, lr
-; CHECK-LLC-NOT:    mov lr,
-; CHECK-LLC:      [[LOOP_HEADER:\.LBB[0-9_]+]]:
-; CHECK-LLC:        le lr, [[LOOP_HEADER]]
-; CHECK-LLC-NOT:    b .
-; CHECK-LLC:      @ %exit
-
 define i32 @test_target_specific(i32* %a, i32* %b) {
 entry:
   br label %loop
@@ -96,16 +86,6 @@ exit:
 ; CHECK-FP:       call void @llvm.set.loop.iterations.i32(i32 100)
 ; CHECK-MVEFP:    call void @llvm.set.loop.iterations.i32(i32 100)
 
-; CHECK-LLC-LABEL: test_fabs:
-; CHECK-LLC:        mov.w lr, #100
-; CHECK-LLC:        dls lr, lr
-; CHECK-LLC-NOT:    mov lr,
-; CHECK-LLC:      [[LOOP_HEADER:\.LBB[0-9_]+]]:
-; CHECK-LLC-NOT:    bl
-; CHECK-LLC:        le lr, [[LOOP_HEADER]]
-; CHECK-LLC-NOT:    b .
-; CHECK-LLC:      @ %exit
-
 define float @test_fabs(float* %a) {
 entry:
   br label %loop