llvm-6502/test/CodeGen/Hexagon/cext-check.ll
Colin LeMahieu 3c3fc28384 [Hexagon] Reapplying 224775 load words.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224786 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-23 20:02:16 +00:00

58 lines
1.8 KiB
LLVM

; RUN: llc -march=hexagon -mcpu=hexagonv4 < %s | FileCheck %s
; Check that we constant extended instructions only when necessary.
define i32 @cext_test1(i32* %a) nounwind {
; CHECK: r{{[0-9]+}}{{ *}}={{ *}}memw(r{{[0-9]+}}{{ *}}+{{ *}}##8000)
; CHECK: r{{[0-9]+}}{{ *}}={{ *}}add(r{{[0-9]+}}{{ *}},{{ *}}##300000)
; CHECK-NOT: r{{[0-9]+}}{{ *}}={{ *}}memw(r{{[0-9]+}}{{ *}}+{{ *}}##4092)
; CHECK-NOT: r{{[0-9]+}}{{ *}}={{ *}}add(r{{[0-9]+}}{{ *}},{{ *}}##300)
entry:
%0 = load i32* %a, align 4
%tobool = icmp ne i32 %0, 0
br i1 %tobool, label %if.then, label %if.end
if.then:
%arrayidx1 = getelementptr inbounds i32* %a, i32 2000
%1 = load i32* %arrayidx1, align 4
%add = add nsw i32 %1, 300000
br label %return
if.end:
%arrayidx2 = getelementptr inbounds i32* %a, i32 1023
%2 = load i32* %arrayidx2, align 4
%add3 = add nsw i32 %2, 300
br label %return
return:
%retval.0 = phi i32 [ %add, %if.then ], [ %add3, %if.end ]
ret i32 %retval.0
}
define i32 @cext_test2(i8* %a) nounwind {
; CHECK-NOT: r{{[0-9]+}}{{ *}}={{ *}}memub(r{{[0-9]+}}+{{ *}}##1023)
; CHECK: r{{[0-9]+}}{{ *}}={{ *}}add(r{{[0-9]+}}{{ *}},{{ *}}##300000)
; CHECK: r{{[0-9]+}}{{ *}}={{ *}}memub(r{{[0-9]+}}{{ *}}+{{ *}}##1024)
; CHECK-NOT: r{{[0-9]+}}{{ *}}={{ *}}add(r{{[0-9]+}}{{ *}},{{ *}}##6000)
entry:
%tobool = icmp ne i8* %a, null
br i1 %tobool, label %if.then, label %if.end
if.then:
%arrayidx = getelementptr inbounds i8* %a, i32 1023
%0 = load i8* %arrayidx, align 1
%conv = zext i8 %0 to i32
%add = add nsw i32 %conv, 300000
br label %return
if.end:
%arrayidx1 = getelementptr inbounds i8* %a, i32 1024
%1 = load i8* %arrayidx1, align 1
%conv2 = zext i8 %1 to i32
%add3 = add nsw i32 %conv2, 6000
br label %return
return:
%retval.0 = phi i32 [ %add, %if.then ], [ %add3, %if.end ]
ret i32 %retval.0
}