diff options
-rw-r--r-- | lib/Target/PowerPC/PPCCTRLoops.cpp | 19 | ||||
-rw-r--r-- | test/CodeGen/PowerPC/ctrloops-softfloat.ll | 129 |
2 files changed, 148 insertions, 0 deletions
diff --git a/lib/Target/PowerPC/PPCCTRLoops.cpp b/lib/Target/PowerPC/PPCCTRLoops.cpp index b6ac4d54d4c..b0a3e93c486 100644 --- a/lib/Target/PowerPC/PPCCTRLoops.cpp +++ b/lib/Target/PowerPC/PPCCTRLoops.cpp @@ -422,6 +422,25 @@ bool PPCCTRLoops::mightUseCTR(const Triple &TT, BasicBlock *BB) { if (SI->getNumCases() + 1 >= (unsigned)TLI->getMinimumJumpTableEntries()) return true; } + + if (TM->getSubtargetImpl(*BB->getParent())->getTargetLowering()->useSoftFloat()) { + switch(J->getOpcode()) { + case Instruction::FAdd: + case Instruction::FSub: + case Instruction::FMul: + case Instruction::FDiv: + case Instruction::FRem: + case Instruction::FPTrunc: + case Instruction::FPExt: + case Instruction::FPToUI: + case Instruction::FPToSI: + case Instruction::UIToFP: + case Instruction::SIToFP: + case Instruction::FCmp: + return true; + } + } + for (Value *Operand : J->operands()) if (memAddrUsesCTR(TM, Operand)) return true; diff --git a/test/CodeGen/PowerPC/ctrloops-softfloat.ll b/test/CodeGen/PowerPC/ctrloops-softfloat.ll new file mode 100644 index 00000000000..037bfda7323 --- /dev/null +++ b/test/CodeGen/PowerPC/ctrloops-softfloat.ll @@ -0,0 +1,129 @@ +; RUN: llc -mtriple=powerpc-unknown-linux-gnu -O1 < %s | FileCheck %s + +; double x, y; +; +; void foo1() +; { +; x = y = 1.1; +; for (int i = 0; i < 175; i++) +; y = x + y; +; } +; void foo2() +; { +; x = y = 1.1; +; for (int i = 0; i < 175; i++) +; y = x - y; +; } +; void foo3() +; { +; x = y = 1.1; +; for (int i = 0; i < 175; i++) +; y = x * y; +; } +; void foo4() +; { +; x = y = 1.1; +; for (int i = 0; i < 175; i++) +; y = x / y; +; } + +target datalayout = "E-m:e-p:32:32-i64:64-n32" +target triple = "powerpc-buildroot-linux-gnu" + +@y = common global double 0.000000e+00, align 8 +@x = common global double 0.000000e+00, align 8 + +define void @foo1() #0 { + store double 1.100000e+00, double* @y, align 8 + store double 1.100000e+00, double* @x, align 8 + br label %2 + +; <label>:1 ; preds = %2 + %.lcssa = phi double [ %4, %2 ] + store double %.lcssa, double* @y, align 8 + ret void + +; <label>:2 ; preds = %2, %0 + %3 = phi double [ 1.100000e+00, %0 ], [ %4, %2 ] + %i.01 = phi i32 [ 0, %0 ], [ %5, %2 ] + %4 = fadd double %3, 1.100000e+00 + %5 = add nuw nsw i32 %i.01, 1 + %exitcond = icmp eq i32 %5, 75 + br i1 %exitcond, label %1, label %2 + ; CHECK: bl __adddf3 + ; CHECK: cmplwi + ; CHECK-NOT: li [[REG1:[0-9]+]], 175 + ; CHECK-NOT: mtctr [[REG1]] +} + +define void @foo2() #0 { + store double 1.100000e+00, double* @y, align 8 + store double 1.100000e+00, double* @x, align 8 + br label %2 + +; <label>:1 ; preds = %2 + %.lcssa = phi double [ %4, %2 ] + store double %.lcssa, double* @y, align 8 + ret void + +; <label>:2 ; preds = %2, %0 + %3 = phi double [ 1.100000e+00, %0 ], [ %4, %2 ] + %i.01 = phi i32 [ 0, %0 ], [ %5, %2 ] + %4 = fsub double 1.100000e+00, %3 + %5 = add nuw nsw i32 %i.01, 1 + %exitcond = icmp eq i32 %5, 75 + br i1 %exitcond, label %1, label %2 + ; CHECK: bl __subdf3 + ; CHECK: cmplwi + ; CHECK-NOT: li [[REG1:[0-9]+]], 175 + ; CHECK-NOT: mtctr [[REG1]] +} + +define void @foo3() #0 { + store double 1.100000e+00, double* @y, align 8 + store double 1.100000e+00, double* @x, align 8 + br label %2 + +; <label>:1 ; preds = %2 + %.lcssa = phi double [ %4, %2 ] + store double %.lcssa, double* @y, align 8 + ret void + +; <label>:2 ; preds = %2, %0 + %3 = phi double [ 1.100000e+00, %0 ], [ %4, %2 ] + %i.01 = phi i32 [ 0, %0 ], [ %5, %2 ] + %4 = fmul double %3, 1.100000e+00 + %5 = add nuw nsw i32 %i.01, 1 + %exitcond = icmp eq i32 %5, 75 + br i1 %exitcond, label %1, label %2 + ; CHECK: bl __muldf3 + ; CHECK: cmplwi + ; CHECK-NOT: li [[REG1:[0-9]+]], 175 + ; CHECK-NOT: mtctr [[REG1]] +} + +define void @foo4() #0 { + store double 1.100000e+00, double* @y, align 8 + store double 1.100000e+00, double* @x, align 8 + br label %2 + +; <label>:1 ; preds = %2 + %.lcssa = phi double [ %4, %2 ] + store double %.lcssa, double* @y, align 8 + ret void + +; <label>:2 ; preds = %2, %0 + %3 = phi double [ 1.100000e+00, %0 ], [ %4, %2 ] + %i.01 = phi i32 [ 0, %0 ], [ %5, %2 ] + %4 = fdiv double 1.100000e+00, %3 + %5 = add nuw nsw i32 %i.01, 1 + %exitcond = icmp eq i32 %5, 75 + br i1 %exitcond, label %1, label %2 + ; CHECK: bl __divdf3 + ; CHECK: cmplwi + ; CHECK-NOT: li [[REG1:[0-9]+]], 175 + ; CHECK-NOT: mtctr [[REG1]] +} + +attributes #0 = { "use-soft-float"="true" } + |