mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-14 11:32:34 +00:00
3e883734fa
and allow some optimizations to turn conditional branches into unconditional. This commit adds a simple control-flow optimization which merges two consecutive basic blocks which are connected by a single edge. This allows the codegen to operate on larger basic blocks. rdar://11973998 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161852 91177308-0d34-0410-b5e6-96231b3b80d8
65 lines
3.9 KiB
LLVM
65 lines
3.9 KiB
LLVM
; RUN: llc < %s -march=x86 | FileCheck %s
|
|
|
|
target triple = "i686-pc-linux-gnu"
|
|
@str = internal constant [9 x i8] c"%f+%f*i\0A\00" ; <[9 x i8]*> [#uses=1]
|
|
|
|
define i32 @main() {
|
|
; CHECK: main:
|
|
; CHECK-NOT: ret
|
|
; CHECK: subl $4, %{{.*}}
|
|
; CHECK: ret
|
|
|
|
entry:
|
|
%retval = alloca i32, align 4 ; <i32*> [#uses=1]
|
|
%tmp = alloca { double, double }, align 16 ; <{ double, double }*> [#uses=4]
|
|
%tmp1 = alloca { double, double }, align 16 ; <{ double, double }*> [#uses=4]
|
|
%tmp2 = alloca { double, double }, align 16 ; <{ double, double }*> [#uses=3]
|
|
%pi = alloca double, align 8 ; <double*> [#uses=2]
|
|
%z = alloca { double, double }, align 16 ; <{ double, double }*> [#uses=4]
|
|
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
|
|
store double 0x400921FB54442D18, double* %pi
|
|
%tmp.upgrd.1 = load double* %pi ; <double> [#uses=1]
|
|
%real = getelementptr { double, double }* %tmp1, i64 0, i32 0 ; <double*> [#uses=1]
|
|
store double 0.000000e+00, double* %real
|
|
%real3 = getelementptr { double, double }* %tmp1, i64 0, i32 1 ; <double*> [#uses=1]
|
|
store double %tmp.upgrd.1, double* %real3
|
|
%tmp.upgrd.2 = getelementptr { double, double }* %tmp, i64 0, i32 0 ; <double*> [#uses=1]
|
|
%tmp4 = getelementptr { double, double }* %tmp1, i64 0, i32 0 ; <double*> [#uses=1]
|
|
%tmp5 = load double* %tmp4 ; <double> [#uses=1]
|
|
store double %tmp5, double* %tmp.upgrd.2
|
|
%tmp6 = getelementptr { double, double }* %tmp, i64 0, i32 1 ; <double*> [#uses=1]
|
|
%tmp7 = getelementptr { double, double }* %tmp1, i64 0, i32 1 ; <double*> [#uses=1]
|
|
%tmp8 = load double* %tmp7 ; <double> [#uses=1]
|
|
store double %tmp8, double* %tmp6
|
|
%tmp.upgrd.3 = bitcast { double, double }* %tmp to { i64, i64 }* ; <{ i64, i64 }*> [#uses=1]
|
|
%tmp.upgrd.4 = getelementptr { i64, i64 }* %tmp.upgrd.3, i64 0, i32 0 ; <i64*> [#uses=1]
|
|
%tmp.upgrd.5 = load i64* %tmp.upgrd.4 ; <i64> [#uses=1]
|
|
%tmp9 = bitcast { double, double }* %tmp to { i64, i64 }* ; <{ i64, i64 }*> [#uses=1]
|
|
%tmp10 = getelementptr { i64, i64 }* %tmp9, i64 0, i32 1 ; <i64*> [#uses=1]
|
|
%tmp11 = load i64* %tmp10 ; <i64> [#uses=1]
|
|
call void @cexp( { double, double }* sret %tmp2, i64 %tmp.upgrd.5, i64 %tmp11 )
|
|
%tmp12 = getelementptr { double, double }* %z, i64 0, i32 0 ; <double*> [#uses=1]
|
|
%tmp13 = getelementptr { double, double }* %tmp2, i64 0, i32 0 ; <double*> [#uses=1]
|
|
%tmp14 = load double* %tmp13 ; <double> [#uses=1]
|
|
store double %tmp14, double* %tmp12
|
|
%tmp15 = getelementptr { double, double }* %z, i64 0, i32 1 ; <double*> [#uses=1]
|
|
%tmp16 = getelementptr { double, double }* %tmp2, i64 0, i32 1 ; <double*> [#uses=1]
|
|
%tmp17 = load double* %tmp16 ; <double> [#uses=1]
|
|
store double %tmp17, double* %tmp15
|
|
%tmp18 = getelementptr { double, double }* %z, i64 0, i32 1 ; <double*> [#uses=1]
|
|
%tmp19 = load double* %tmp18 ; <double> [#uses=1]
|
|
%tmp20 = getelementptr { double, double }* %z, i64 0, i32 0 ; <double*> [#uses=1]
|
|
%tmp21 = load double* %tmp20 ; <double> [#uses=1]
|
|
%tmp.upgrd.6 = getelementptr [9 x i8]* @str, i32 0, i64 0 ; <i8*> [#uses=1]
|
|
%tmp.upgrd.7 = call i32 (i8*, ...)* @printf( i8* %tmp.upgrd.6, double %tmp21, double %tmp19 ) ; <i32> [#uses=0]
|
|
br label %finish
|
|
finish:
|
|
%retval.upgrd.8 = load i32* %retval ; <i32> [#uses=1]
|
|
ret i32 %retval.upgrd.8
|
|
}
|
|
|
|
declare void @cexp({ double, double }* sret , i64, i64)
|
|
|
|
declare i32 @printf(i8*, ...)
|
|
|