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llvm-mirror/test/CodeGen/X86/2008-10-27-CoalescerBug.ll
Dan Gohman 5f6f8101d5 Split the Add, Sub, and Mul instruction opcodes into separate
integer and floating-point opcodes, introducing
FAdd, FSub, and FMul.

For now, the AsmParser, BitcodeReader, and IRBuilder all preserve
backwards compatability, and the Core LLVM APIs preserve backwards
compatibility for IR producers. Most front-ends won't need to change
immediately.

This implements the first step of the plan outlined here:
http://nondot.org/sabre/LLVMNotes/IntegerOverflow.txt

llvm-svn: 72897
2009-06-04 22:49:04 +00:00

45 lines
1.5 KiB
LLVM

; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse2 -stats |& not grep {Number of register spills}
define fastcc void @fourn(double* %data, i32 %isign) nounwind {
entry:
br label %bb
bb: ; preds = %bb, %entry
%indvar93 = phi i32 [ 0, %entry ], [ %idim.030, %bb ] ; <i32> [#uses=2]
%idim.030 = add i32 %indvar93, 1 ; <i32> [#uses=1]
%0 = add i32 %indvar93, 2 ; <i32> [#uses=1]
%1 = icmp sgt i32 %0, 2 ; <i1> [#uses=1]
br i1 %1, label %bb30.loopexit, label %bb
bb3: ; preds = %bb30.loopexit, %bb25, %bb3
%2 = load i32* null, align 4 ; <i32> [#uses=1]
%3 = mul i32 %2, 0 ; <i32> [#uses=1]
%4 = icmp slt i32 0, %3 ; <i1> [#uses=1]
br i1 %4, label %bb18, label %bb3
bb18: ; preds = %bb3
%5 = fdiv double %11, 0.000000e+00 ; <double> [#uses=1]
%6 = tail call double @sin(double %5) nounwind readonly ; <double> [#uses=1]
br label %bb24.preheader
bb22.preheader: ; preds = %bb24.preheader, %bb22.preheader
br label %bb22.preheader
bb25: ; preds = %bb24.preheader
%7 = fmul double 0.000000e+00, %6 ; <double> [#uses=0]
%8 = add i32 %i3.122100, 0 ; <i32> [#uses=1]
%9 = icmp sgt i32 %8, 0 ; <i1> [#uses=1]
br i1 %9, label %bb3, label %bb24.preheader
bb24.preheader: ; preds = %bb25, %bb18
%i3.122100 = or i32 0, 1 ; <i32> [#uses=2]
%10 = icmp slt i32 0, %i3.122100 ; <i1> [#uses=1]
br i1 %10, label %bb25, label %bb22.preheader
bb30.loopexit: ; preds = %bb
%11 = fmul double 0.000000e+00, 0x401921FB54442D1C ; <double> [#uses=1]
br label %bb3
}
declare double @sin(double) nounwind readonly