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; RUN: llc -march=hexagon -hexagon-eif=0 -ifcvt-limit=0 -hexagon-initial-cfg-cleanup=0 < %s | FileCheck %s
; Check that we constant extended instructions only when necessary.
define i32 @cext_test1(ptr %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, ptr %a, align 4
%tobool = icmp ne i32 %0, 0
br i1 %tobool, label %if.then, label %if.end
if.then:
%arrayidx1 = getelementptr inbounds i32, ptr %a, i32 2000
%1 = load i32, ptr %arrayidx1, align 4
%add = add nsw i32 %1, 300000
br label %return
if.end:
%arrayidx2 = getelementptr inbounds i32, ptr %a, i32 1023
%2 = load i32, ptr %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(ptr %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 ptr %a, null
br i1 %tobool, label %if.then, label %if.end
if.then:
%arrayidx = getelementptr inbounds i8, ptr %a, i32 1023
%0 = load i8, ptr %arrayidx, align 1
%conv = zext i8 %0 to i32
%add = add nsw i32 %conv, 300000
br label %return
if.end:
%arrayidx1 = getelementptr inbounds i8, ptr %a, i32 1024
%1 = load i8, ptr %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
}
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