From da6d9cbb6c04b26077975fe3f6326c246d53d5c0 Mon Sep 17 00:00:00 2001 From: Luke Kenneth Casson Leighton Date: Mon, 22 Nov 2021 11:51:07 +0000 Subject: [PATCH] adding a couple more hazard avoidance cases --- src/openpower/test/general/overlap_hazards.py | 41 +++++++++++++++++++ 1 file changed, 41 insertions(+) diff --git a/src/openpower/test/general/overlap_hazards.py b/src/openpower/test/general/overlap_hazards.py index fa186e0f..13aa9c3a 100644 --- a/src/openpower/test/general/overlap_hazards.py +++ b/src/openpower/test/general/overlap_hazards.py @@ -25,3 +25,44 @@ class HazardTestCase(TestAccumulatorBase): e.intregs[4] = 4 e.intregs[5] = 7 # 3 plus 4 == 7 self.add_case(Program(lst, bigendian), initial_regs, expected=e) + + def case_div_add_overlap2(self): + lst = ["divd 3, 1, 2", + "mullw 5, 7, 6", # 2*4=8, overwritten later by add + "divd 4, 5, 6", + "add 5, 3, 4"] + initial_regs = [0] * 32 + initial_regs[1] = 6 + initial_regs[2] = 2 + initial_regs[6] = 2 + initial_regs[7] = 4 + e = ExpectedState(pc=16) + e.intregs[1] = 6 + e.intregs[2] = 2 + e.intregs[3] = 3 # 6 divided by 2 == 3 + e.intregs[4] = 4 # 8 divided by 2 == 4 + e.intregs[5] = 7 # 3 plus 4 == 7 + e.intregs[6] = 2 + e.intregs[7] = 4 + self.add_case(Program(lst, bigendian), initial_regs, expected=e) + + def cse_div_add_overlap_3(self): + lst = ["divd 3, 1, 2", + "mullw 5, 7, 6", # 2*4=6, overwritten later by add + "addi 5, 5, 2", # add 2 to 6 = 8 + "divd 4, 5, 6", + "add 5, 3, 4"] + initial_regs = [0] * 32 + initial_regs[1] = 6 + initial_regs[2] = 2 + initial_regs[6] = 2 + initial_regs[7] = 4 + e = ExpectedState(pc=16) + e.intregs[1] = 6 + e.intregs[2] = 2 + e.intregs[3] = 3 # 6 divided by 2 == 3 + e.intregs[4] = 4 # 8 divided by 2 == 4 + e.intregs[5] = 7 # 3 plus 4 == 7 + e.intregs[6] = 2 + e.intregs[7] = 4 + self.add_case(Program(lst, bigendian), initial_regs, expected=e) -- 2.30.2