#include "llvm/Analysis/TargetLibraryInfo.h"
#include "llvm/Analysis/TargetTransformInfo.h"
#include "llvm/IR/IRBuilder.h"
+#include "llvm/Support/DebugCounter.h"
#include "llvm/Transforms/Scalar.h"
#include "llvm/Transforms/Utils/BasicBlockUtils.h"
#define DEBUG_TYPE "partially-inline-libcalls"
+DEBUG_COUNTER(PILCounter, "partially-inline-libcalls-transform",
+ "Controls transformations in partially-inline-libcalls");
static bool optimizeSQRT(CallInst *Call, Function *CalledFunc,
BasicBlock &CurrBB, Function::iterator &BB,
if (Call->onlyReadsMemory())
return false;
+ if (!DebugCounter::shouldExecute(PILCounter))
+ return false;
+
// Do the following transformation:
//
// (before)
--- /dev/null
+; REQUIRES: asserts
+; RUN: opt -S -debug-counter=partially-inline-libcalls-transform-skip=1,partially-inline-libcalls-transform-count=1 \
+; RUN: -partially-inline-libcalls -mtriple=x86_64-unknown-linux-gnu < %s | FileCheck %s
+;; Test that, with debug counters on, we will skip the first optimization opportunity, perform next 1,
+;; and ignore all the others left.
+
+define float @f1(float %val) {
+; CHECK-LABEL: @f1(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[RES:%.*]] = tail call float @sqrtf(float [[VAL:%.*]])
+; CHECK-NEXT: ret float [[RES:%.*]]
+entry:
+ %res = tail call float @sqrtf(float %val)
+ ret float %res
+}
+
+define float @f2(float %val) {
+; CHECK-LABEL: @f2(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[RES:%.*]] = tail call float @sqrtf(float [[VAL:%.*]]) #0
+; CHECK-NEXT: [[TMP0:%.*]] = fcmp oge float [[VAL]], 0.000000e+00
+; CHECK-NEXT: br i1 [[TMP0]], label [[ENTRY_SPLIT:%.*]], label [[CALL_SQRT:%.*]]
+; CHECK: call.sqrt:
+; CHECK-NEXT: [[TMP1:%.*]] = tail call float @sqrtf(float [[VAL]])
+; CHECK-NEXT: br label [[ENTRY_SPLIT]]
+; CHECK: entry.split:
+; CHECK-NEXT: [[TMP2:%.*]] = phi float [ [[RES]], [[ENTRY:%.*]] ], [ [[TMP1]], [[CALL_SQRT]] ]
+; CHECK-NEXT: ret float [[TMP2]]
+entry:
+ %res = tail call float @sqrtf(float %val)
+ ret float %res
+}
+
+define float @f3(float %val) {
+; CHECK-LABEL: @f3(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[RES:%.*]] = tail call float @sqrtf(float [[VAL:%.*]])
+; CHECK-NEXT: ret float [[RES:%.*]]
+entry:
+ %res = tail call float @sqrtf(float %val)
+ ret float %res
+}
+
+declare float @sqrtf(float)