llvm-mirror/test/Analysis/ScalarEvolution/2008-02-15-UMax.ll

; RUN: opt < %s -analyze -scalar-evolution | FileCheck %s
; PR2003

; CHECK: umax

define i32 @foo(i32 %n) {
entry:
        br label %header
header:
        %i = phi i32 [ 100, %entry ], [ %i.inc, %next ]
        %cond = icmp ult i32 %i, %n
        br i1 %cond, label %next, label %return
next:
        %i.inc = add i32 %i, 1
        br label %header
return:
        ret i32 %i
}
FileCheck-ize tests. llvm-svn: 188971 2013-08-22 02:51:19 +02:00			`; RUN: opt < %s -analyze -scalar-evolution \| FileCheck %s`
Add 'umax' similar to 'smax' SCEV. Closes PR2003. Parse reversed smax and umax as smin and umin and express them with negative or binary-not SCEVs (which are really just subtract under the hood). Parse 'xor %x, -1' as (-1 - %x). Remove dead code (ConstantInt::get always returns a ConstantInt). Don't use getIntegerSCEV(-1, Ty). The first value is an int, then it gets passed into a uint64_t. Instead, create the -1 directly from ConstantInt::getAllOnesValue(). llvm-svn: 47360 2008-02-20 07:48:22 +01:00			`; PR2003`

FileCheck-ize tests. llvm-svn: 188971 2013-08-22 02:51:19 +02:00			`; CHECK: umax`

Add 'umax' similar to 'smax' SCEV. Closes PR2003. Parse reversed smax and umax as smin and umin and express them with negative or binary-not SCEVs (which are really just subtract under the hood). Parse 'xor %x, -1' as (-1 - %x). Remove dead code (ConstantInt::get always returns a ConstantInt). Don't use getIntegerSCEV(-1, Ty). The first value is an int, then it gets passed into a uint64_t. Instead, create the -1 directly from ConstantInt::getAllOnesValue(). llvm-svn: 47360 2008-02-20 07:48:22 +01:00			`define i32 @foo(i32 %n) {`
			`entry:`
			`br label %header`
			`header:`
			`%i = phi i32 [ 100, %entry ], [ %i.inc, %next ]`
			`%cond = icmp ult i32 %i, %n`
			`br i1 %cond, label %next, label %return`
			`next:`
			`%i.inc = add i32 %i, 1`
			`br label %header`
			`return:`
			`ret i32 %i`
			`}`