llvm-6502/test/CodeGen/SystemZ/int-cmp-37.ll
Ulrich Weigand b503b49b51 [SystemZ] Add CodeGen test cases
This adds all CodeGen tests for the SystemZ target.

This version of the patch incorporates feedback from a review by
Sean Silva.  Thanks to all reviewers!

Patch by Richard Sandiford.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181204 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06 16:17:29 +00:00

82 lines
1.7 KiB
LLVM

; Test 32-bit comparisons in which the second operand is zero-extended
; from a PC-relative i16.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
@g = global i16 1
; Check unsigned comparison.
define i32 @f1(i32 %src1) {
; CHECK: f1:
; CHECK: clhrl %r2, g
; CHECK-NEXT: j{{g?}}l
; CHECK: br %r14
entry:
%val = load i16 *@g
%src2 = zext i16 %val to i32
%cond = icmp ult i32 %src1, %src2
br i1 %cond, label %exit, label %mulb
mulb:
%mul = mul i32 %src1, %src1
br label %exit
exit:
%res = phi i32 [ %src1, %entry ], [ %mul, %mulb ]
ret i32 %res
}
; Check signed comparison.
define i32 @f2(i32 %src1) {
; CHECK: f2:
; CHECK-NOT: clhrl
; CHECK: br %r14
entry:
%val = load i16 *@g
%src2 = zext i16 %val to i32
%cond = icmp slt i32 %src1, %src2
br i1 %cond, label %exit, label %mulb
mulb:
%mul = mul i32 %src1, %src1
br label %exit
exit:
%res = phi i32 [ %src1, %entry ], [ %mul, %mulb ]
ret i32 %res
}
; Check equality.
define i32 @f3(i32 %src1) {
; CHECK: f3:
; CHECK: clhrl %r2, g
; CHECK-NEXT: j{{g?}}e
; CHECK: br %r14
entry:
%val = load i16 *@g
%src2 = zext i16 %val to i32
%cond = icmp eq i32 %src1, %src2
br i1 %cond, label %exit, label %mulb
mulb:
%mul = mul i32 %src1, %src1
br label %exit
exit:
%res = phi i32 [ %src1, %entry ], [ %mul, %mulb ]
ret i32 %res
}
; Check inequality.
define i32 @f4(i32 %src1) {
; CHECK: f4:
; CHECK: clhrl %r2, g
; CHECK-NEXT: j{{g?}}lh
; CHECK: br %r14
entry:
%val = load i16 *@g
%src2 = zext i16 %val to i32
%cond = icmp ne i32 %src1, %src2
br i1 %cond, label %exit, label %mulb
mulb:
%mul = mul i32 %src1, %src1
br label %exit
exit:
%res = phi i32 [ %src1, %entry ], [ %mul, %mulb ]
ret i32 %res
}