2002-05-06 05:35:20 +00:00
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; This test makes sure that div instructions are properly eliminated.
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;
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2006-12-02 04:23:10 +00:00
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; RUN: llvm-upgrade < %s | llvm-as | opt -instcombine | llvm-dis | not grep div
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2007-04-15 07:38:21 +00:00
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; END.
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2002-05-06 05:35:20 +00:00
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implementation
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2003-02-18 19:16:45 +00:00
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int %test1(int %A) {
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2002-05-06 05:35:20 +00:00
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%B = div int %A, 1
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ret int %B
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2003-02-18 19:16:45 +00:00
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}
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2003-02-18 19:28:47 +00:00
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uint %test2(uint %A) {
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%B = div uint %A, 8 ; => Shift
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2004-04-26 14:01:47 +00:00
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ret uint %B
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2003-02-18 19:28:47 +00:00
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}
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int %test3(int %A) {
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%B = div int 0, %A ; => 0, don't need to keep traps
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ret int %B
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}
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2004-04-26 14:01:47 +00:00
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int %test4(int %A) {
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%B = div int %A, -1 ; 0-A
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ret int %B
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}
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2004-09-28 18:21:01 +00:00
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uint %test5(uint %A) {
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%B = div uint %A, 4294967280
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%C = div uint %B, 4294967292
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ret uint %C
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}
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2004-09-29 17:37:07 +00:00
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bool %test6(uint %A) {
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%B = div uint %A, 123
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%C = seteq uint %B, 0 ; A < 123
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ret bool %C
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}
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bool %test7(uint %A) {
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%B = div uint %A, 10
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%C = seteq uint %B, 2 ; A >= 20 && A < 30
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ret bool %C
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}
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bool %test8(ubyte %A) {
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%B = div ubyte %A, 123
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%C = seteq ubyte %B, 2 ; A >= 246
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ret bool %C
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}
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bool %test9(ubyte %A) {
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%B = div ubyte %A, 123
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%C = setne ubyte %B, 2 ; A < 246
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ret bool %C
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}
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2004-12-12 21:40:22 +00:00
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uint %test10(uint %X, bool %C) {
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%V = select bool %C, uint 64, uint 8
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2006-10-26 06:15:43 +00:00
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%R = udiv uint %X, %V
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2004-12-12 21:40:22 +00:00
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ret uint %R
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}
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2006-10-26 06:15:43 +00:00
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int %test11(int %X, bool %C) {
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%A = select bool %C, int 1024, int 32
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%B = udiv int %X, %A
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ret int %B
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2006-02-05 07:52:47 +00:00
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}
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