2009-04-22-TruncCast.ll
1.35 KB
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; RUN: opt < %s -analyze -enable-new-pm=0 -scalar-evolution | FileCheck %s
; RUN: opt < %s -disable-output "-passes=print<scalar-evolution>" 2>&1 | FileCheck %s
; CHECK: Printing analysis 'Scalar Evolution Analysis' for function 'test1'
; CHECK-NOT: (trunc i{{.*}}ext
define i16 @test1(i8 %x) {
%A = sext i8 %x to i32
%B = trunc i32 %A to i16
ret i16 %B
}
; CHECK: Printing analysis 'Scalar Evolution Analysis' for function 'test2'
; CHECK-NOT: (trunc i{{.*}}ext
define i8 @test2(i16 %x) {
%A = sext i16 %x to i32
%B = trunc i32 %A to i8
ret i8 %B
}
; CHECK: Printing analysis 'Scalar Evolution Analysis' for function 'test3'
; CHECK-NOT: (trunc i{{.*}}ext
define i16 @test3(i16 %x) {
%A = sext i16 %x to i32
%B = trunc i32 %A to i16
ret i16 %B
}
; CHECK: Printing analysis 'Scalar Evolution Analysis' for function 'test4'
; CHECK-NOT: (trunc i{{.*}}ext
define i16 @test4(i8 %x) {
%A = zext i8 %x to i32
%B = trunc i32 %A to i16
ret i16 %B
}
; CHECK: Printing analysis 'Scalar Evolution Analysis' for function 'test5'
; CHECK-NOT: (trunc i{{.*}}ext
define i8 @test5(i16 %x) {
%A = zext i16 %x to i32
%B = trunc i32 %A to i8
ret i8 %B
}
; CHECK: Printing analysis 'Scalar Evolution Analysis' for function 'test6'
; CHECK-NOT: (trunc i{{.*}}ext
define i16 @test6(i16 %x) {
%A = zext i16 %x to i32
%B = trunc i32 %A to i16
ret i16 %B
}