File: 2006-12-05-fp-to-int-ext.ll

package info (click to toggle)
llvm-toolchain-3.9 1%3A3.9.1-8
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 441,060 kB
  • ctags: 428,777
  • sloc: cpp: 2,546,577; ansic: 538,318; asm: 119,677; objc: 103,316; python: 102,148; sh: 27,847; pascal: 5,626; ml: 5,510; perl: 5,293; lisp: 4,801; makefile: 2,177; xml: 686; cs: 362; php: 212; csh: 117
file content (12 lines) | stat: -rw-r--r-- 445 bytes parent folder | download | duplicates (27)
1
2
3
4
5
6
7
8
9
10
11
12
; RUN: opt < %s -instcombine -S | grep zext

; Never merge these two conversions, even though it's possible: this is
; significantly more expensive than the two conversions on some targets
; and it causes libgcc to be compile __fixunsdfdi into a recursive 
; function.
define i64 @test(double %D) {
        %A = fptoui double %D to i32            ; <i32> [#uses=1]
        %B = zext i32 %A to i64         ; <i64> [#uses=1]
        ret i64 %B
}